Timeline of Solar System astronomy

Short description: none

The following is a timeline of Solar System astronomy and science. It includes the advances in the knowledge of the Earth at planetary scale, as part of it.

A transit of Venus

## Contents

* 1 Direct observation
* 2 Antiquity
* 3 Middle Ages
* 4 16th century
* 5 17th century
* 6 18th century
* 7 19th century
* 8 1900–1957
* 9 1958–1976
* 10 1977–2000
* 11 2001–present
* 12 See also
* 13 References

## Direct observation

Humans (Homo sapiens) have inhabited the Earth in the last 300,000 years at least,[1] and they had witnessed directly observable astronomical and geological phenomena. For millennia, these have arose admiration and curiosity, being admitted as of superhuman nature and scale. Multiple imaginative interpretations were being fixed in oral traditions of difficult dating, and incorporated into a variety of belief systems, as animism, shamanism, mythology, religion and/or philosophy.

Although such phenomena are not "discoveries" per se, as they are part of the common human experience, their observation shape the knowledge and comprehension of the world around us, and about its position in the observable universe, in which the Sun plays a role of outmost importance for us. What today is known to be the Solar System was regarded for generations as the contents of the "whole universe".

The most relevant phenomena of these kind are:

* Basic gravity. Following the trajectory of free falling objects, the Earth is "below" us and the sky is "above" us.
* Characterization of the terrestrial surface, in four main types of terrain: lands covered with vegetation; dry deserts; bodies of liquid water, both salted (seas and oceans) and fresh (rivers and lakes); and frozen landscapes (glaciars, polar ice caps). Recognition of emerged lands and submerged ones. Recognition of mountain ranges and cavities (grottos and caverns).
* Characterization of the Earth's atmosphere and its associated meteorological phenomena: clouds, rain, hail and snow; wind, storms and thunderstorms, tornadoes and hurricanes/cyclones/typhoons; fluvial floods, deluges, landslides and avalanches; rainbows and halos; mirages; glacial ages.
* Diurnal apparent movement of the Sun: sunrise, noon and sunset. Recognition of the four cardinal points: north, south, east, and west.
* Nightly apparent movement of the celestial sphere with its main features regarded as "fixed": stars, the brightest of them forming casual groupings known as constellations, under different names and shapes in many cultures. Different constellations are viewed in different seasons and latitudes. Along with the faint strip of the Milky Way, they altogether conform the idea of the firmament, which as viewed from Earth it seems to be a consistent, solid unit rotating smooth and uniformly. This leads to the intuitive idea of a geocentric universe.
* Presence of the Moon, with its phases. Tides. Recognition of meteorological phenomena as sub-lunar.
* Yearly apparent transit of the Sun through the constellations of the zodiac. Recognition of the lunar cycle as a (lunar) month, and the solar cycle as the (solar) year, the basis for calendars.
* Observation of non-fixed or "wandering" objects in the night sky: the five classical planets; shooting stars and meteor showers; bolides; comets; auroras; zodiacal light.
* Solar and lunar eclipses. Planetary conjunctions.
* Identification of the frigid, temperate and torrid zones of the Earth by latitude. Equator and Tropics. Four seasons in temperate zones: spring, summer, autumn and winter. Equinoxes and solstices. Monsoons. Midnight sun.
* Telluric phenomena: seismic (earthquakes and seaquakes; tsunamis). Geysers. Volcanoes.

Along with an indeterminate number of unregistered sightings of rare events: meteor impacts; novae and supernovae.

## Antiquity

See also: Astronomy:Timeline of Chinese astronomy

Venus tablet of Ammisaduqa

File:Antikythera Fragment A (Front).webp

The Antikythera mechanism (Fragment A – front); visible is the largest gear in the mechanism, approximately 140 millimetres (5.5 in) in diameter

File:Antikythera Fragment A (Back).webp

The Antikythera mechanism (Fragment A – back)

* 2nd millennium BCE – Earliest possible date for the composition of the Babylonian Venus tablet of Ammisaduqa, a 7th-century BC copy[2] of a list of observations of the motions of the planet Venus, and the oldest planetary table currently known.
* 2nd millennium BCE – Babylonian astronomers identify the inner planets Mercury and Venus and the outer planets Mars, Jupiter and Saturn, which would remain the only known planets until the invention of the telescope in early modern times.[3]
* Late 2nd millennium BCE – Chinese astronomers record a solar eclipse during the reign of Zhong Kang, described as part of the document Punitive Expedition of Yin in the Book of Documents.[4]
* c. 1200 BCE – Earliest Babylonian star catalogues.[5]
* c. 1100 BCE – Chinese first determine the spring equinox. * c. 750 BCE – During the reign of Nabonassar (747–733 BC), the systematic records of ominous phenomena in Babylonian astronomical diaries that began at this time allowed for the discovery of a repeating 18-year cycle of lunar eclipses.[6]
* 776 BCE – Chinese make the earliest reliable record of a solar eclipse.[7] * 687 BCE – Chinese make earliest known record of meteor shower.[8]
* 613 BCE – A comet, possibly Comet Halley, is recorded in Spring and Autumn Annals by the Chinese.[9]
* 586 BCE – Thales of Miletus alleged to have predicted a solar eclipse.[10]
* c. 560 BCE – Anaximander posits a mechanical model of the world: a cylindrical Earth[11] floats freely in space surrounded by three concentric wheels turning at different distances: the closest for the stars and planets, the second for the Moon and the farthest for the Sun, all conceived not as bodies but as "fire seen thru holes" in every wheel.[12] But he starts to feed the idea of celestial mechanics as different of the notion of planets being heavenly deities, leaving mythology aside.
* c. 475 BCE – Parmenides is credited to be the first Greek who declared that the Earth is spherical and is situated in the centre of the universe, believed to have been the first to detect the identity of Hesperus, the evening-star, and Phosphorus, the morning-star (Venus), and by some, the first to claim that moonlight is a reflection of sunlight.[13]
* c. 450 BCE – Anaxagoras shows that the Moon shines by reflected sunlight: the phases of the Moon are caused by the illumination of its sphere by the Sun in different angles along the lunar month. He was also the first to give a correct explanation of eclipses, by asserting that the Moon is rocky, thus opaque, and closer to the Earth than the Sun.[14]
* c. 400 BCE – Philolaus and other Pythagoreans propose a model in which the Earth and the Sun revolve around an invisible "Central Fire" (not the Sun), and the Moon and the planets orbit the Earth.[15] Due to philosophical concerns about the number 10, they also added a tenth "hidden body" or Counter-Earth (Antichthon), always in the opposite side of the invisible Central Fire and therefore also invisible from Earth.[16]
* c. 360 BCE – Plato claims in his Timaeus that circles and spheres are the preferred shape of the universe and that the Earth is at the centre. These circles are the orbits of the heavenly bodies, varying in size for every of them. He arranged these celestial orbs, in increasing order from the Earth: Moon, Sun, Venus, Mercury, Mars, Jupiter, Saturn, and the fixed stars located on the celestial sphere forming the outermost shell.[17]
* c. 360 BCE – Eudoxus of Cnidus proposes for first time a purely geometric-mathematical, geocentric model of the planetary movements, including that of the Sun and the Moon.[18]
* c. 350 BCE – Aristotle argues for a spherical Earth using lunar eclipses[19] and other observations. Also, he asserts his conception of the heavenly spheres,[20] and of an outer space fulfilled with aether.[21]
* c. 330 BCE – Heraclides Ponticus is said to be the first Greek who proposes that the Earth rotates on its axis, from west to east, once every 24 hours, contradicting Aristotle's teachings. Simplicius says that Heraclides proposed that the irregular movements of the planets can be explained if the Earth moves while the Sun stays still,[22] but these statements are disputed.[23]
* c. 280 BCE – Aristarchus of Samos offers the first definite discussion of the possibility of a heliocentric cosmos,[24] and uses the size of the Earth's shadow on the Moon to estimate the Moon's orbital radius at 60 Earth radii, and its physical radius as one-third that of the Earth. He also makes an inaccurate attempt to measure the distance to the Sun.[25]
* c. 250 BCE – Following the heliocentric ideas of Aristarcus, Archimedes in his work The Sand Reckoner computes the diameter of the universe centered around the Sun to be about 1014 stadia (in modern units, about 2 light years, 18.93×1012 km, 11.76×1012 mi).[26]
* c. 210 BCE – Apollonius of Perga shows the equivalence of two descriptions of the apparent retrograde planet motions (assuming the geocentric model), one using eccentrics and another deferent and epicycles.[27] * c. 200 BCE – Eratosthenes determines that the radius of the Earth is roughly 6,400 km (4,000 mi).[28]
* c. 150 BCE – According to Strabo (1.1.9), Seleucus of Seleucia is the first to state that the tides are due to the attraction of the Moon, and that the height of the tides depends on the Moon's position relative to the Sun.[29]
* c. 150 BCE – Hipparchus uses parallax to determine that the distance to the Moon is roughly 380,000 km (236,100 mi).[30]
* c. 134 BCE – Hipparchus discovers the precession of the equinoxes.[31]
* c. 87 BCE – The Antikythera mechanism, the earliest known computer, is built. It is an extremely complex astronomical computer designed to predict solar and lunar eclipses accurately and track the movements of the planets and the Sun. It could also calculate the differences in the apsidial and axial precession of heavenly bodies with extreme degree of accuracy.[32]
* 28 BCE – Chinese history book Book of Han makes earliest known dated record of sunspot.[33]
* c. 150 CE – Claudius Ptolemy completes his work Almagest, that codifies the astronomical knowledge of his time and cements the geocentric model in the West, and it remained the most authoritative text on astronomy for more than 1,500 years. The Almagest put forward extremely complex and accurate methods to determine the position and structure of planets, stars (including some objects as nebulae, supernovas and galaxies then regarded as stars also) and heavenly bodies. It includes a catalogue of 1,022 stars (largely based on a previous one by Hipparchus of about 850 entries) and a large amount of constellations, comets and other astronomical phenomena.[34] Following a long astrological tradition, he arranged the heavenly spheres ordering them (from Earth outward): Moon, Mercury, Venus, Sun, Mars, Jupiter, Saturn and fixed stars.
* c. 420 – Martianus Capella describes a modified geocentric model, in which the Earth is at rest in the center of the universe and circled by the Moon, the Sun, three planets and the stars, while Mercury and Venus circle the Sun.[35]

## Middle Ages

* c. 500 – Indian mathematician-astronomer Aryabhata accurately computes the solar and lunar eclipses, and the length of Earth's revolution around the Sun.
* c. 500 – Aryabhata discovers the oblique motion of the apsidial precession of the Sun and notes that it is changing with respect to the motion of stars and Earth.
* c. 500 – Aryabhata discovers the rotation of the Earth by conducting experiments and giving empirical examples for his theories. He also explains the cause of day and night through the diurnal rotation of the Earth. He also developed highly accurate models for the orbital motion of the Moon, Mercury and Mars. He also developed a geocentric model of the universe.[36][37][38]
* c. 620 – Indian mathematician-astronomer Brahmagupta describe gravity as a attractive force by the term guruvatkarshan.[39]
* 628 – Brahmagupta gives methods for calculations of the motions and places of various planets, their rising and setting, conjunctions, and calculations of the solar and lunar eclipses.[40]
* 820 – Persian astronomer, Muhammad ibn Musa al-Khwarizmi, composes his Zij astronomical tables, utilising Arabic numerals and the Hindu–Arabic numeral system in his calculations.[41] He also translates Aryabhata's astronomical and mathematical treatises into Arabic.[42]
* 850 – Al-Farghani (Alfraganus) translated and wrote commentary on Ptolemy's Almagest and gave values for the motion of the ecliptic, and the precessional movement of the heavenly bodies based on the values given by Ptolemy and Hipparchus.[43]
* 1019 – Al-Biruni observes and describes the lunar eclipse on September 17 in detail and gives the exact latitudes of the stars during it.[44]An annotated diagram explaining the phases of the moon from one of al-Biruni's astronomical works. Sun (far right) – Earth (far left) and Lunar phases
* c. 1030 – In his major astronomical work, the Mas'ud Canon, Al-Biruni observed that, contrary to Ptolemy, the Sun's apogee (highest point in the heavens) was mobile, not fixed.[45]
* c. 1060 – Andalusi astronomer Al-Zarqali corrects geographical data from Ptolemy and Al-Khwarizmi, specifically by correcting Ptolemy's estimate of the longitude of the Mediterranean Sea from 62 degrees to the correct value of 42 degrees.[46] He was the first to demonstrate the motion of the solar apogee relative to the fixed background of the stars, measuring its rate of motion as 12.9 seconds per year, which is remarkably close to the modern calculation of 11.77 seconds.[47] Al-Zarqālī also contributed to the famous Tables of Toledo.
* c. 1175 – Gerard of Cremona translates Ptolemy's Almagest from Arabic into Latin.[48]
* 1178 – Five witnesses from Canterbury reported to the abbey's chronicler, Gervase, that shortly after sunset on 18 June, they saw "the upper horn [of the moon] split in two".[49] The unusual phenomenon is compatible with the sighting of the impact of a disrupted comet close the Moon's edge (as viewed from Earth) in an area occupied by the crater now known as Giordano Bruno, as some claimed in the 1970s,[50] but there is still no conclusive evidence. If confirmed, it would be the first recorded event of this kind.
* c. 1200 – Fakhr al-Din al-Razi, in dealing with his conception of physics and the physical world, rejected the Aristotelian and Avicennian view of a single world, but instead proposed that there are "a thousand thousand worlds (alfa alfi 'awalim) beyond this world such that each one of those worlds be bigger and more massive than this world as well as having the like of what this world has."[51]

Alfonsine Tables

* 1252 – Alfonso X of Castile sponsored the creation and compilation of the Alfonsine Tables by scholars he assemble in the Toledo School of Translators in Toledo, Spain.[52] These astronomical tables were used and updated during the following three centuries, as the main source of astronomical data, mainly to calculate ephemerides (which were in turn used by astrologers to cast horoscopes).[53]
* c. 1300 – Jewish astronomer Levi ben Gershon (Gersonides) recognized that the stars are much larger than the planets. Gersonides appears to be among the few astronomers before modern times, along Aristarcus, to have surmised that the fixed stars are much further away than the planets. While all other astronomers put the fixed stars on a rotating sphere just beyond the outer planets, Gersonides estimated the distance to the fixed stars to be no less than 159,651,513,380,944 Earth radii, or about 100,000 light-years in modern units.[54][55]
* c. 1350 – Ibn al-Shatir anticipates Copernicus by abandoning the equant of Ptolemy in his calculations of planetary motion,[56] and he provides a proto empirical model of lunar motion which accurately matches observations.[57]
* c. 1350 – Nicole Oresme put forward several revolutionary theories like mean speed theorem, which he used in calculating the position and shape of the planetary orbits, measuring the apsidial and axial precession of the lunar and solar orbits, measuring the angles and distance between ecliptics and calculating stellar and planetary distances. In his Livre du Ciel et du Monde, Oresme discussed a range of evidence for the daily rotation of the Earth on its axis.[58][59]
* 1440 – Nicholas of Cusa proposes that the Earth rotates on its axis in his book, On Learned Ignorance.[60] Like Oresme, he also wrote about the possibility of the plurality of worlds.[61]

## 16th century

* 1501 – Indian astronomer Nilakantha Somayaji proposes a universe in which the planets orbit the Sun, but the Sun orbits the Earth.[62]
* c. 1514 – Nicolaus Copernicus states his heliocentric theory in Commentariolus.[63][64][65]
* 1522 – First circumnavigation of the world by Magellan-Elcano expedition shows that the Earth is, in effect, a sphere.[66]
* 1543 – Copernicus publishes his heliocentric theory in De revolutionibus orbium coelestium.[67]
* 1576 – Tycho Brahe founds the first modern astronomical observatory in modern Europe, Uraniborg.[68]Engraving of the mural quadrant from Brahe's book Astronomiae instauratae mechanica (1598)
* 1577 – Tycho Brahe records the position of the Great Comet of that year as viewed from Uraniborg (in the island Hven, near Copenhagen) and compares it with that observed by Thadaeus Hagecius from Prague at the same time, giving deliberate consideration to the movement of the Moon. It was discovered that, while the comet was in approximately the same place for both of them, the Moon was not, and this meant that the comet was much further out, contrary to what was previously conceived as an atmospheric phenomenon.[69]
* 1582 – Pope Gregory XIII introduces the Gregorian calendar, an enhanced solar calendar more accurate than the previous Roman Julian calendar.[70] The principal change was to space leap years differently so as to make the average calendar year 365.2425 days long, more closely approximating the 365.2422-day 'tropical' or 'solar' year that is determined by the Earth's revolution around the Sun. The reform advanced the date by 10 days: Thursday 4 October 1582 was followed by Friday 15 October 1582. The Gregorian calendar is still in use today.
* 1584 – Giordano Bruno published two important philosophical dialogues (La Cena de le Ceneri and De l'infinito universo et mondi) in which he argued against the planetary spheres and affirmed the Copernican principle. Bruno's infinite universe was filled with a substance - a "pure air", aether, or spiritus - that offered no resistance to the heavenly bodies which, in Bruno's view, rather than being fixed, moved under their own impetus (momentum). Most dramatically, he completely abandoned the idea of a hierarchical universe. Bruno's cosmology distinguishes between "suns" which produce their own light and heat, and have other bodies moving around them; and "earths" which move around suns and receive light and heat from them. Bruno suggested that some, if not all, of the objects classically known as fixed stars are in fact suns,[71] so he was arguably the first person to grasp that "stars are other suns with their own planets." Bruno wrote that other worlds "have no less virtue nor a nature different from that of our Earth" and, like Earth, "contain animals and inhabitants".[72]
* 1588 – Tycho Brahe publishes his own Tychonic system, a blend between Ptolemy's classical geocentric model and Copernicus' heliocentric model, in which the Sun and the Moon revolve around the Earth, in the center of universe, and all other planets revolve around the Sun.[73]

## 17th century

* 1600 – William Gilbert with his model called the terrella, shows the Earth behaves like a huge but low intensity magnet with its own magnetic field, which explains the behaviour of the compass pointing to the magnetic poles.[74]
* 1604 – Galileo Galilei correctly hypothesized that the distance of a falling object is proportional to the square of the time elapsed.[75]
* 1609 – Johannes Kepler states his first two empirical laws of planetary motion, stating that the orbits of the planets around the Sun are elliptical rather than circular, and thus resolving many ancient problems with planetary models, without the need of any epicycle.[76]
* 1609 – Galileo Galilei starts to make telescopes with about 3x up to 30x magnification, based only on descriptions of the first practical telescope which Hans Lippershey tried to patent in the Netherlands in 1608.[77] With a Galilean telescope, the observer could see magnified, upright images on the Earth - what is commonly known as a spyglass - but also it can be used to observe the sky, a key tool for further astronomical discoveries.Galileo showing the Doge of Venice how to use the telescope (fresco by Giuseppe Bertini)Ole Rømer at work
* 1609 – Galileo Galilei aimed his telescope at the Moon. While not being the first person to observe the Moon through a telescope (English mathematician Thomas Harriot had done it four months before but only saw a "strange spottednesse"),[78] Galileo was the first to deduce the cause of the uneven waning as light occlusion from lunar mountains and craters. He also estimated the heights of that mountains. The Moon was not what was long thought to have been a translucent and perfect sphere, as Aristotle claimed, and hardly the first "planet".
* 1610 – Galileo Galilei observes the four main moons of Jupiter: Callisto, Europa, Ganymede, and Io;[79] sees Saturn's planetary rings (but does not recognize that they are rings),[80] and observes the phases of Venus,[81] disproving the Ptolemaic system though not the geocentric model.
* 1619 – Johannes Kepler states his third empirical law of planetary motion, which relates the distance and period of the planetary orbits.[82]
* 1631 – Pierre Gassendi is the first to observe the transit of Mercury. He was surprised by the small size of the planet compared to the Sun.[83]
* 1632 – Galileo Galilei is sometimes credited with the discovery of the lunar libration in latitude,[84] although Thomas Harriot or William Gilbert might have done so before.[85]
* 1639 – Jeremiah Horrocks and his friend and correspondent William Crabtree are the first astronomers known to observe and record a transit of Venus.[86]
* 1643 – Evangelista Torricelli, disciple of Galileo, builds an elementary barometer, which shows that the air weighs, and incidentally creating the first artificial vacuum in a laboratory.[87]
* 1648 – Johannes Hevelius discovers the lunar libration in longitude.[84] It can reach 7°54′ in amplitude.[88]
* 1648 – Blaise Pascal, aided by his brother-in-law Florin Périer at mount Puy de Dôme, shows that air pressure on a high mountain is less than at a lower altitude, proving his idea that, as air has a finite weight, Earth's atmosphere must have a maximum height.[89]
* 1655 – Giovanni Domenico Cassini and Robert Hooke separately discover Jupiter's Great Red Spot.[90]
* 1656 – Christiaan Huygens identifies Saturn's rings as rings and discovers its moon Titan.[91]
* 1659 – Huygens estimated a value of about 24,000 Earth radii for the distance Earth-Sun, remarkably close to modern values but he was based on many unproven (and incorrect) assumptions; the accuracy of his value seems to be based more on luck than good measurement, with his various errors cancelling each other out.[92]
* 1665 – Cassini determines the rotational speeds of Jupiter, Mars, and Venus.[93]
* 1668 – Isaac Newton builds his own reflecting telescope, the first fully functional of this kind, and a landmark for future developings as it reduces spherical aberration with no chromatic aberration.[94]
* 1672 – Cassini discovers Saturn's moons Iapetus and Rhea.[93]
* 1672 – Jean Richer and Cassini measure the Earth-Sun distance, the astronomical unit, to be about 138,370,000 km.[95]
* 1675 – Ole Rømer uses the orbital mechanics of Jupiter's moons to estimate that the speed of light is about 227,000 km/s.[96]
* 1675 – Cassini discovers the main division in the rings of Saturn, named after him, the Cassini Division.[97]
* 1686 – Cassini discovers Saturn's moons Tethys and Dione.[93]
* 1687 – Isaac Newton publishes his law of universal gravitation in his work Philosophiæ Naturalis Principia Mathematica.[98]
* 1690 – Cassini observes differential rotation within Jupiter's atmosphere.[93]

## 18th century

Halley's map of the path of the Solar eclipse of 3 May 1715 across England

* 1704 – John Locke enters the term "Solar System" in the English language, when he used it to refer to the Sun, planets, and comets as a whole.[99]
* 1705 – Edmond Halley publicly predicts the periodicity of the comet of 1682 and computes its expected path of return in 1757.[100]
* 1715 – Edmond Halley calculates the shadow path of a solar eclipse.[101]
* 1716 – Edmond Halley suggests a high-precision measurement of the Sun-Earth distance by timing the transit of Venus.[102]
* 1718 – Edmond Halley discovers proper motion of stars, dispelling the concept of the "fixed stars".[103]
* 1729 – James Bradley determines the cause of the aberration of starlight, providing the first direct evidence of the Earth's motion, and a more accurate method to compute the speed of light.[104]
* 1735–1739 – The French Academy of Sciences sends two expeditions to measure the oblateness of the Earth by measuring the length of a degree of latitude at two locations: one to Lapland, close to the Arctic Circle and other to the Equator, the French Geodesic Mission. Their measurements show that the Earth is an oblate spheroid flattened at the poles.[105]
* 1749 – Pierre Bouguer, part of French Geodesic Mission, publish that he and Charles Marie de La Condamine had been able to detect a deflection of a pendulum's plumb-bob of 8 seconds of arc in the proximity of the volcano Chimborazo.[106] Although not enough to measure the value of the gravitational constant accurately, the experiment had at least proved that the Earth could not be a hollow shell, as some thinkers of the day had suggested.[107]
* c. 1750 – The three collinear Lagrange points (L1, L2, L3) were discovered by Leonhard Euler, a decade before Joseph-Louis Lagrange discovered the remaining two.[108][109]
* 1752 – Benjamin Franklin conducts his kite experiment, successfully extracting sparks from a cloud, showing that lightning bolts are huge natural electrical discharges.[110]
* 1755 – Immanuel Kant first formulates the nebular hypothesis of Solar System formation.[111]
* 1758 – Johann Palitzsch observes the return of the comet that Edmond Halley had anticipated in 1705.[112] The gravitational attraction of Jupiter had slowed the return by 618 days. Parisian astronomer La Caille suggests it should be named "Halley's Comet".[113]
* 1761 – Parallax measurements of the transit of Venus allow astronomers to determine the absolute distances and sizes of the Sun and planets for the first time.
* 1761 – Mikhail Lomonosov is the first to discover and appreciate the atmosphere of Venus during his observation of the transit of Venus.[114]
* 1766 – Johann Titius finds the Titius-Bode rule for planetary distances.[115]
* 1772 – Johann Bode publishes the Titius-Bode rule for planetary distances.[115]
* 1772–1775 – The second voyage of James Cook definitively disproves the existence of the hypothesized Southern continent of Terra Australis.[116]
* 1775 – Charles Hutton, based on his analysis of the Schiehallion experiment, shows the Earth has a density of at least 4,500 kg·m−3 and suggests that it has a planetary core made of metal. (In comparison with the modern accepted figure of 5,515 kg·m−3, the density of the Earth had been computed with an error of less than 20%.)[117]
* 1781 – William Herschel discovers a seventh planet, Uranus, during a telescopic survey of the Northern sky.[118]The William Herschel's 40-foot (12 m) telescope
* 1781 – Charles Messier and his assistant Pierre Méchain publish the first catalogue of 110 nebulae and star clusters, the most prominent deep-sky objects that can easily be observed from Earth's Northern Hemisphere, in order not to be confused with ordinary Solar System's comets.[119]
* 1783 – William Herschel discovers that Mars's polar cap expands and recedes with its year, showing that it has seasons.
* 1787 – Herschel discovers Uranus's moons Titania and Oberon.[120]
* 1789 – Herschel discovers Saturn's moons Enceladus and Mimas.[121]
* 1796 – Pierre Laplace re-states the nebular hypothesis for the formation of the Solar System from a spinning nebula of gas and dust.[122]
* 1798 – Henry Cavendish accurately measures the gravitational constant in the laboratory, which allows the mass of the Earth to be derived, and hence the masses of all bodies in the Solar System.[123]

## 19th century

* 1801 – Giuseppe Piazzi discovers Ceres, a body that filled a gap between Mars and Jupiter following the Titius-Bode rule. At first, it was regarded as a new planet.[124]
* 1802 – Heinrich Wilhelm Olbers discovers Pallas, at roughly the same distance to the Sun than Ceres.[125] He proposed that the two objects were the remnants of a destroyed planet,[126] and predicted that more of these pieces would be found.
* 1802 – Due their star-like apparience, William Herschel suggested Ceres and Pallas, and similar objects if found, be placed into a separate category, named asteroids, although they were still counted among the planets for some decades.[127]
* 1804 – Karl Ludwig Harding discovers the asteroid Juno.[128]
* 1807 – Olbers discovers the asteroid Vesta.[129]
* 1821 – Alexis Bouvard detects irregularities in the orbit of Uranus.[130]
* 1825 – Pierre Laplace completes his study of gravitation, the stability of the Solar System, tides, the precession of the equinoxes, the libration of the Moon, and Saturn's rings in his work Traité de mécanique céleste (Treatise of celestial mechanics).[131]
* 1833 – Thomas Henderson successfully measures the stellar parallax of alpha Centauri, being then regarded as the Sun's closest star, but delayed the publication until 1839.[132]
* 1838 – Friedrich Wilhelm Bessel measures the parallax of the star 61 Cygni, refuting one of the oldest arguments against heliocentrism.[133]

The earliest surviving dagerrotype of the Moon by Draper (1840) Percival Lowell in 1914, observing Venus in the daytime with the 24-inch (61 cm) Alvan Clark & Sons refracting telescope at Flagstaff, Arizona

* 1840 – John W. Draper takes a daguerreotype of the Moon, the first astronomical photograph.[134]
* 1845 – John Adams predicts the existence and location of an eighth planet from irregularities in the orbit of Uranus.[135]
* 1845 – Karl Ludwig Hencke discovers a fifth body between Mars and Jupiter, Astraea[136] and, shortly thereafter, new objects were found there at an accelerating rate. Counting them among the planets became increasingly cumbersome. Eventually, they were dropped from the planet list (as first suggested by Alexander von Humboldt in the early 1850s) and Herschel's coinage, "asteroids", gradually came into common use.[137] Since then, the region they occupy between Mars and Jupiter is known as the asteroid belt.
* 1846 – Urbain Le Verrier predicts the existence and location of an eighth planet from irregularities in the orbit of Uranus.[135]
* 1846 – Johann Galle discovers the eighth planet, Neptune, following the predicted position gave to him by Le Verrier.[135]
* 1846 – William Lassell discovers Neptune's moon Triton, just seventeen days later of planet's discovery.[138]
* 1848 – Lassell, William Cranch Bond and George Phillips Bond discover Saturn's moon Hyperion.[139][140]
* 1849 – Édouard Roche finds the limiting radius of tidal destruction and tidal creation for a body held together only by its own gravity, called the Roche limit, and uses it to explain why Saturn's rings do not condense into a satellite.[141]
* 1849 – Annibale de Gasparis discovers the asteroid Hygiea, the fourth largest asteroid in the Solar System by both volume and mass.[142]
* 1851 – Lassell discovers Uranus's moons Ariel and Umbriel.[143]
* 1856 – James Clerk Maxwell demonstrates that a solid ring around Saturn would be torn apart by gravitational forces and argues that Saturn's rings consist of a multitude of tiny satellites.[144]
* 1859 – Robert Bunsen and Gustav Kirchhoff develop the spectroscope, which they used to pioneer the identification of the chemical elements in the Sun,Cite error: Invalid `<ref>` tag; refs with no name must have content showing that the Sun contains mainly hydrogen, and also sodium.
* 1862 – By analysing the spectroscopic signature of the Sun and comparing it to those of other stars, Father Angelo Secchi determines that the Sun is itself a star.[145]
* 1866 – Giovanni Schiaparelli realizes that meteor streams occur when the Earth passes through the orbit of a comet that has left debris along its path.[146]
* 1868 – Jules Janssen observes a bright yellow line with a wavelength of 587.49 nanometers in the spectrum of the chromosphere of the Sun, during a total solar eclipse in Guntur, India. Later in the same year, Norman Lockyer observed the same line in the solar spectrum, and concluded that it was caused by an element in the Sun unknown on Earth. This element is helium, which currently comprises 23.8% of the mass in the solar photosphere.[147]
* 1877 – Asaph Hall discovers Mars's moons Deimos and Phobos.[148]
* 1887 – The Michelson–Morley experiment, intended to measure the relative motion of Earth through the (assumed) stationary luminiferous aether, got no results. This put an end to the centuries-old idea of the aether, dating back to Aristotle, and with it all the contemporary aether theories.[149]
* 1892 – Edward Emerson Barnard discovers Jupiter's moon Amalthea.[150]
* 1895 – Percival Lowell starts publishing books about his observations of features in the surface on Mars that he claimed as artificial Martian canals (due to a mistranslation of a previous paper by Schiaparelli on the subject), popularizing the long-held belief that these markings showed that Mars harbors intelligent life forms.[151]
* 1897 – William Thomson, 1st Baron Kelvin, based on the thermal radiation rate and the gravitational contraction forces, argues the age of the Sun to be no more than 20 million years – unless some energy source beyond what was then known was found.[152]
* 1899 – William Henry Pickering discovers Saturn's moon Phoebe.[153]

## 1900–1957

Palomar Mountain Observatory featured on 1948 United States stamp

* 1904 – Ernest Rutherford argues, in a lecture attended by Kelvin, that radioactive decay releases heat, providing the unknown energy source Kelvin had suggested, and ultimately leading to radiometric dating of rocks which reveals ages of billions of years for the Solar System bodies.[154]
* 1906 – Max Wolf discovers the Trojan asteroid Achilles.[155]
* 1908 – A meteor air burst occurs near Tunguska in Siberia, Russia. It is the largest impact event on Earth in recorded history to date.[156]
* 1909 – Andrija Mohorovičić discovers the Moho discontinuity, the boundary between the Earth's crust and the mantle.[157]
* 1912 – Alfred Wegener suggests the continental drift hypothesis, that the continents are slowly drifting around the Earth.[158]
* 1915 – Robert Innes discovers Proxima Centauri, the closest star to Earth after the Sun.[159]
* 1919 – Arthur Stanley Eddington uses a solar eclipse to successfully test Albert Einstein's General Theory of Relativity,[160] which in turn explains the observed irregularities in the orbital motion of Mercury,[161] and disproves the existence of the hypothesized inner planet Vulcan.
* 1920 – In the Great Debate between Harlow Shapley and Heber Curtis, galaxies are finally recognized as objects beyond the Milky Way, and the Milky Way as a galaxy proper.[162] Within it lies the Solar System.
* 1930 – Clyde Tombaugh discovers Pluto.[163] It was regarded for decades as the ninth planet of the Solar System.

The first photo from space was taken from a V-2 launched by US scientists on 24 October 1946.

* 1930 – Seth Nicholson and Edison Pettit measure the surface temperature of the Moon.[164]
* 1932 – Karl Guthe Jansky recognizes received radio signals coming from outer space as extrasolar, coming mainly from Sagittarius.[165][166] They are the first evidence of the center of the Milky Way, and the firsts experiences that founded the discipline of radio astronomy.
* 1935 – The Explorer II balloon reached a record altitude of 22,066 m (72,395 ft), enabling its occupants to photograph the curvature of the Earth for the first time.[167]
* 1938 – Hans Bethe calculates the details of the two main energy-producing nuclear reactions that power the Sun.[168][169]
* 1944 – Gerard Kuiper discovers that the satellite Titan has a substantial atmosphere.[170]
* 1946 – American launch of a camera-equipped V-2 rocket provides the first image of the Earth from space.[171]
* 1949 – Gerard Kuiper discovers Uranus's moon Miranda and Neptune's moon Nereid.[170]
* 1950 – Jan Oort suggests the presence of a cometary reservoir in the outer limits of the Solar System, the Oort cloud.[172]
* 1951 – Gerard Kuiper argues for an annular reservoir of comets between 40 and 100 astronomical units from the Sun having formed early in the Solar System's evolution, but he did not think that such a belt still existed today.[173] Decades later, this region was named after him, the Kuiper belt.

## 1958–1976

See also: Engineering:Space technology and Space exploration

Earth taken from Lunar Orbiter 1 in 1966. Image as originally shown to the public displays extensive flaws and striping. Artist's impression of Pioneer 10's flyby of Jupiter

* 1958 – Under supervision of James Van Allen, Explorer 1 and Explorer 3 confirmed the existence of the Earth's magnetosphere radiation belts, named after him.[174]
* 1959 – Explorer 6 sends the first image of the entire Earth from space.[175]
* 1959 – Luna 3 sends the first images of another celestial body, the Moon, from space, including its unseen far side.[176]
* 1962 – Mariner 2 Venus flyby performs the first closeup observations of another planet.[177]
* 1964 – Mariner 4 spacecraft provides the first detailed images of the surface of Mars.[178]
* 1966 – Luna 9 Moon lander provides the first images from the surface of another celestial body.[179]
* 1967 – Venera 4 provides the first information on Venus's dense atmosphere.[180]
* 1968 – Apollo 8 becomes the first crewed lunar mission, providing historic images of the whole Earth.[181]
* 1969 – Apollo 11 mission landed on the Moon, first humans walking upon it.[182] They return the first lunar samples back to Earth.[183]
* 1970 – Venera 7 Venus lander sends back the first information successfully obtained from the surface of another planet.[184]
* 1971 – Mariner 9 Mars spacecraft becomes the first to successfully orbit another planet.[185] It provides the first detailed maps of the Martian surface,[186] discovering much of the planet's topography, including the volcano Olympus Mons and the canyon system Valles Marineris, which is named in its honor.
* 1971 – Mars 3 lands on Mars, and transmits the first partial image from the surface of another planet.[187]
* 1973 – Skylab astronauts discover the Sun's coronal holes.[188]
* 1973 – Pioneer 10 flies by Jupiter, providing the first closeup images of the planet and revealing its intense radiation belts.[189]
* 1973 – Mariner 10 provides the first closeup images of the clouds of Venus.[179]
* 1974 – Mariner 10 provides the first closeup images of the surface of Mercury.[179]
* 1975 – Venera 9 becomes the first probe to successfully transmit images from the surface of Venus.[190]
* 1976 – Viking 1 and 2 become the first probes to send images (in color) from the surface of Mars, as well as to perform in situ biological experiments with the Martian soil.[191]

## 1977–2000

A map of Venus produced from Pioneer data

* 1977 – James Elliot discovers the rings of Uranus during a stellar occultation experiment on the Kuiper Airborne Observatory.[192]
* 1977 – Charles Kowal discovers Chiron, the first centaur.[193]
* 1978 – James Christy discovers Charon, the large moon of Pluto.[194]
* 1978 – The Pioneer Venus probe maps the surface of Venus.[195]
* 1978 – Peter Goldreich and Scott Tremaine present a Boltzmann equation model of planetary-ring dynamics for indestructible spherical ring particles that do not self-gravitate, and they find a stability requirement relation between ring optical depth and particle normal restitution coefficient.[196]
* 1979 – Pioneer 11 flies by Saturn, providing the first ever closeup images of the planet and its rings. It discovers the planet's F ring and determines that its moon Titan has a thick atmosphere.[197]
* 1979 – Goldreich and Tremaine postulate that Saturn's F ring is maintained by shepherd moons, a prediction that would be confirmed by observations.[198]
* 1979 – Voyager 1 flies by Jupiter and discovers its faint ring system, as well as volcanoes on Io, the innermost of its Galilean moons.[199]
* 1979 – Voyager 2 flies by Jupiter and discovers evidence of an ocean under the surface of its moon Europa.[200]
* 1980 – Voyager 1 flies by Saturn and takes the first images of Titan.[201] However, its atmosphere is opaque to visible light, so its surface remains obscured.
* 1982 – Venera 13 lands on Venus, sends the first photographs in color of its surface, and records atmospheric wind noises, the first sounds heard from another planet.[202]
* 1986 – Voyager 2 provides the first ever detailed images of Uranus, its moons and rings.[200]
* 1986 – The Giotto probe, part of an international effort known as the "Halley Armada", provides the first ever close up images of a comet, the Halley's Comet.[203]
* 1988 – Martin Duncan, Thomas Quinn, and Scott Tremaine demonstrate that short-period comets come primarily from the Kuiper Belt and not the Oort cloud.[204]
* 1989 – Voyager 2 provides the first ever detailed images of Neptune, its moons and rings.[200]
* 1990 – The Hubble Space Telescope is launched.[205] Aimed primarily at deep-space objects, it is also used to observe faint objects in the Solar System.[206][207][208][209]
* 1990 – Voyager 1 is turned around to take the Portrait of the Planets of the Solar System,[210] source of the Pale Blue Dot image of the Earth.[211]
* 1991 – The Magellan spacecraft maps the surface of Venus.[212]
* 1991 – The Galileo, while en route to Jupiter, encounters asteroid Gaspra, which became the first asteroid imaged by a spacecraft.[213]
* 1992 – David C. Jewitt and Jane Luu of the University of Hawaii discover Albion, the first object deemed to be a member of the Kuiper belt.[214]
* 1993 – Asteroid Ida is visited by the Galileo before heading to Jupiter. Mission member Ann Harch discovers its natural satellite Dactyl in images returned by the spacecraft, the first asteroid moon discovered.[215]
* 1994 – Comet Shoemaker–Levy collides with Jupiter, providing the first direct observation of an extraterrestrial collision of Solar System objects.[216]
* 1995 – The Galileo becomes the first spacecraft to orbit Jupiter. Its atmospheric entry probe provides the first data taken within the planet itself.[213]
* 1997 – Mars Pathfinder deploys on Mars the first rover to operate outside the Earth–Moon system, the Sojourner, which conducts many experiments on the Martian surface, both teleoperated and semi-autonomous.[217]
* 2000 – NEAR Shoemaker probe provides the first detailed images of a near-Earth asteroid, Eros.[218]

## 2001–present

* 2002 – Chad Trujillo and Michael Brown of Caltech at the Palomar Observatory discover the minor planet Quaoar in the Kuiper belt.[219]
* 2003 – M. Brown, C. Trujillo, and David Rabinowitz discover Sedna, a large trans-Neptunian object (TNO) with an unprecedented 12,000-year orbit.[220]
* 2003 – Voyager 1 enters the termination shock, the point where the solar wind slows to subsonic speeds.[221]
* 2004 – Voyager 1 sends back the first data ever obtained from within the Solar System's heliosheath.[222]
* 2004 – M. Brown, C. Trujillo, and D. Rabinowitz discover the TNO Orcus.[223]
* 2004 – M. Brown, C. Trujillo, and D. Rabinowitz discover the Kuiper Belt Object (KBO) Haumea.[224] A second team led by José Luis Ortiz Moreno also claims the discovery.[225]
* 2004 – The Cassini–Huygens spacecraft becomes the first to orbit Saturn. It discovers complex motions in the rings, several new small moons and cryovolcanism on the moon Enceladus, studies the Saturn's hexagon, and provides the first images from the surface of Titan.[226]
* 2005 – M. Brown, C. Trujillo, and D. Rabinowitz discover Eris, a TNO more massive than Pluto,[227] and later, by other team led by Brown, also its moon, Dysnomia.[228] Eris was first imaged in 2003, and is the most massive object discovered in the Solar System since Neptune's moon Triton in 1846.
* 2005 – M. Brown, C. Trujillo, and D. Rabinowitz discover another notable KBO, Makemake.[229]
* 2005 – The Mars Exploration Rovers perform the first astronomical observations ever taken from the surface of another planet, imaging an eclipse by Mars's moon Phobos.[230]

Annular eclipse of the Sun by Phobos as viewed by the Mars Curiosity rover (20 August 2013).

* 2005 – Hayabusa spacecraft lands on asteroid Itokawa and collect samples. It returned the samples to Earth in 2010.[231]
* 2006 – The 26th General Assembly of the IAU voted in favor of a revised definition of a planet[232] and officially declared Ceres, Pluto, and Eris dwarf planets.[233][234]
* 2007 – Dwarf planet Gonggong, a large KBO, was discovered by Megan Schwamb, M. Brown, and D. Rabinowitz.[235]
* 2008 – The IAU declares Makemake and Haumea dwarf planets.[236][237]
* 2011 – Dawn spacecraft enters orbit around the large asteroid Vesta making detailed measurements.[238]
* 2012 – Saturn's moon Methone is imaged up close by the Cassini spacecraft, revealing a remarkably smooth surface.[239]
* 2012 – Dawn spacecraft breaks orbit of Vesta and heads for Ceres.[238]
* 2013 – MESSENGER spacecraft provides the first ever complete map of the surface of Mercury.[240]
* 2013 – A team led by Felipe Braga Ribas discover a ring system around the minor planet and centaur Chariklo, the first of this kind ever detected.[241]
* 2014 – Rosetta spacecraft becomes the first comet orbiter (around 67P/Churyumov–Gerasimenko),[242] and deploys on it the first comet lander Philae that collected close-up data from the comet's surface.[243]
* 2015 – Dawn spacecraft enters orbit around the dwarf planet Ceres making detailed measurements.[244]
* 2015 – New Horizons spacecraft flies by Pluto, providing the first ever sharp images of its surface, and its largest moon Charon.[245]
* 2017 – ʻOumuamua, the first known interstellar object crossing the Solar System, is identified.[246]
* 2019 – Closest approach of New Horizons to Arrokoth, a KBO farther than Pluto.[247]
* 2019 – 2I/Borisov, the first interstellar comet and second interstellar object, is discovered.[248]
* 2022 – The Double Asteroid Redirection Test (DART) spacecraft mission intentionally crashed into Dimorphos, the minor-planet moon of the asteroid Didymos, deviating (slightly) the orbit of a Solar System body for the first time ever.[249] While DART hosted no scientific payload, its camera took closeup photos of the two objects, and a secondary spacecraft, the LICIACube, also gathered related scientific data.[250]
* 2025 – 3I/ATLAS, the second interstellar comet and third interstellar object, is discovered.

## See also

* Discovery and exploration of the Solar System
* Timeline of discovery of Solar System planets and their moons
* Timeline of Solar System exploration
* Timeline of first images of Earth from space
* List of former planets
* List of hypothetical Solar System objects in astronomy
* Historical models of the Solar System
* History of astronomy
* Timeline of cosmological theories

The number of currently known, or observed, objects of the Solar System are in the hundreds of thousands. Many of them are listed in the following articles:

* List of Solar System objects
* List of gravitationally rounded objects of the Solar System
* List of natural satellites
* List of possible dwarf planets
* List of minor planets (numbered) and List of unnumbered minor planets
* List of trans-Neptunian objects (numbered) and List of unnumbered trans-Neptunian objects
* Lists of comets

## References

1. ↑ Hublin, Jean-Jacques; Ben-Ncer, Abdelouahed; Bailey, Shara E.; Freidline, Sarah E.; Neubauer, Simon; Skinner, Matthew M.; Bergmann, Inga; Le Cabec, Adeline et al. (8 June 2017). "New fossils from Jebel Irhoud, Morocco and the pan-African origin of Homo sapiens". Nature 546 (7657): 289–292. doi:10.1038/nature22336. PMID 28593953. Bibcode: 2017Natur.546..289H. https://kar.kent.ac.uk/62267/1/Submission_288356_1_art_file_2637492_j96j1b.pdf.
2. ↑ Hobson, Russell (2009). The Exact Transmission of Texts in the First Millennium B.C. (PDF) (PhD thesis). University of Sydney.
3. ↑ Sachs, A. (2 May 1974). "Babylonian observational astronomy". Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences 276 (1257): 43–50. doi:10.1098/rsta.1974.0008. Bibcode: 1974RSPTA.276...43S.
4. ↑ "Punitive expedition of Yin". https://ctext.org/shang-shu/punitive-expedition-of-yin. "On the first day of the last month of autumn, the sun and moon did not meet harmoniously in Fang"
5. ↑ Rogers, J. H. (February 1998). "Origins of the ancient constellations: I. The Mesopotamian traditions". Journal of the British Astronomical Association 108: 9–28. Bibcode: 1998JBAA..108....9R.
6. ↑ A. Aaboe; J. P. Britton; J. A. Henderson; Otto Neugebauer; A. J. Sachs (1991). "Saros Cycle Dates and Related Babylonian Astronomical Texts". Transactions of the American Philosophical Society (American Philosophical Society) 81 (6): 1–75. doi:10.2307/1006543. "One comprises what we have called "Saros Cycle Texts," which give the months of eclipse possibilities arranged in consistent cycles of 223 months (or 18 years).".
7. ↑ Stephenson, F. Richard (1982). "Historical Eclipses". Scientific American 247 (4): 154–163. doi:10.1038/scientificamerican1082-170. Bibcode: 1982SciAm.247d.154S.
8. ↑ "Lyrids – NASA Science" (in en). 20 November 2017. https://science.nasa.gov/solar-system/meteors-meteorites/lyrids/.
9. ↑ Wilkinson, Endymion (2012). Chinese History: A New Manual. Harvard-Yenching Institute Monograph Series 84. Harvard-Yenching Institute; Harvard University Asia Center. pp. 612. ISBN 978-0-674-06715-8.
10. ↑ Stephenson, F. Richard; Fatoohi, Louay J. (November 1997). "Thales's Prediction of a Solar Eclipse". Journal for the History of Astronomy 28 (4): 279–282. doi:10.1177/002182869702800401. Bibcode: 1997JHA....28..279S.
11. ↑ "A column of stone", Aetius reports in De Fide (III, 7, 1), or "similar to a pillar-shaped stone", pseudo-Plutarch (III, 10).
12. ↑ Most of Anaximander's model of the Universe comes from pseudo-Plutarch (II, 20–28):

"[The Sun] is a circle twenty-eight times as big as the Earth, with the outline similar to that of a fire-filled chariot wheel, on which appears a mouth in certain places and through which it exposes its fire, as through the hole on a flute. [...] the Sun is equal to the Earth, but the circle on which it breathes and on which it's borne is twenty-seven times as big as the whole earth. [...] [The eclipse] is when the mouth from which comes the fire heat is closed. [...] [The Moon] is a circle nineteen times as big as the whole earth, all filled with fire, like that of the Sun".
13. ↑ Thurston, Hugh (1994). Early astronomy. New York: Springer-Verlag New York. p. 110. ISBN 0-387-94107-X.
14. ↑ Curd, Patricia (2019). "Anaxagoras". in Zalta, Edward N.. Stanford Encyclopedia of Philosophy. https://plato.stanford.edu/entries/anaxagoras/.
15. ↑ Thurston, Hugh (1994). Early astronomy. New York: Springer-Verlag New York. p. 111. ISBN 0-387-94107-X.
16. ↑ Dreyer, John Louis Emil (1906). History of the planetary systems from Thales to Kepler. p. 42. https://books.google.com/books?id=OgRAAQAAIAAJ&q=counter-earth+Antichthon+mysterious&pg=PA42. "To complete the number ten, Philolaus created the antichthon, or counter-earth. This tenth planet is always invisible to us, because it is between us and the central fire and always keeps pace with the Earth."
17. ↑ Pedersen, Olaf (1993). Early physics and astronomy. A historical introduction. Cambridge (UK): Cambridge University Press. ISBN 0-521-40340-5.
18. ↑ "Eudoxus of Cnidus." Complete Dictionary of Scientific Biography. Vol. 4. Detroit: Charles Scribner's Sons, 2008. 465–467. Gale Virtual Reference Library. Web. 2 June 2014.
19. ↑ De caelo, 297b31–298a10
20. ↑ Grant, Planets, Stars, and Orbs, p. 440.
21. ↑ Lloyd, G. E. R. (1968). The critic of Plato. Aristotle: The Growth and Structure of His Thought. Cambridge University Press. ISBN 978-0-521-09456-6.
22. ↑ Simplicius (2003). "Physics 2". On Aristotle's. Ithaca: Cornell University Press. pp. 48. ISBN 9780801441011. https://archive.org/details/onaristotlescate00simp.
23. ↑ Eastwood, Bruce (1992). "Heraclides and Heliocentrism: Texts, Diagrams, and Interpretations". Journal for the History of Astronomy 23 (4): 253. doi:10.1177/002182869202300401. Bibcode: 1992JHA....23..233E.
24. ↑ Heath, Thomas Little (1913). "Aristarchus of Samos, the ancient Copernicus; a history of Greek astronomy to Aristarchus, together with Aristarchus's Treatise on the sizes and distances of the sun and moon : a new Greek text with translation and notes". p. 302. https://archive.org/details/aristarchusofsam00heatuoft.
25. ↑ Hirshfeld, Alan W. (2004). "The Triangles of Aristarchus". The Mathematics Teacher 97 (4): 228–231. doi:10.5951/MT.97.4.0228.
26. ↑ Archimedes, The Sand Reckoner 511 R U, by Ilan Vardi, accessed 28-II-2007.
27. ↑ Carrol, Bradley and Ostlie, Dale, An Introduction to Modern Astrophysics, 2nd ed., Addison-Wesley, San Francisco, 2007. p. 4 [ISBN missing]
28. ↑ Russo, Lucio (2004). The forgotten revolution : how science was born in 300 BC and why it had to be reborn. Berlin: Springer. p. 68. ISBN 3-540-20396-6. OCLC 52945835. https://books.google.com/books?id=MOTpnfz7ZuYC.
29. ↑ Waerden, Bartel Leendert van der (1987). "The Heliocentric System in Greek, Persian and Hindu Astronomy". Annals of the New York Academy of Sciences 500 (1): 527. doi:10.1111/j.1749-6632.1987.tb37224.x. Bibcode: 1987NYASA.500..525V.
30. ↑ G. J. Toomer, "Hipparchus on the distances of the sun and moon," Archive for History of Exact Sciences 14 (1974), 126–142.
31. ↑ Alexander Jones "Ptolemy in Perspective: Use and Criticism of his Work from Antiquity to the Nineteenth Century, Springer, 2010, p. 36.
32. ↑ Magazine, Smithsonian; Marchant, Jo. "Decoding the Antikythera Mechanism, the First Computer" (in en). https://www.smithsonianmag.com/history/decoding-antikythera-mechanism-first-computer-180953979/.
33. ↑ "The Observation of Sunspots". UNESCO Courier. 1988. http://findarticles.com/p/articles/mi_m1310/is_1988_Oct/ai_6955852/. Retrieved 2010-07-14.
34. ↑ "Almagest – Ptolemy (Elizabeth)" (in en). https://projects.iq.harvard.edu/predictionx/almagest-ptolemy-elizabeth.
35. ↑ Bruce S. Eastwood, Ordering the Heavens: Roman Astronomy and Cosmology in the Carolingian Renaissance (Leiden: Brill, 2007), pp. 238–39.
36. ↑ India, Digital Branding Learners (2019-01-01). "Aryabhatta the the [sic great Indian Mathematicians"]. Learners India. https://www.academia.edu/38561360.
37. ↑ "Aryabhata – Biography" (in en). https://mathshistory.st-andrews.ac.uk/Biographies/Aryabhata_I/.
38. ↑ Shukla, Kripa Shankar (1987). "Main Characteristics and Achievements of Ancient Indian Astronomy in Historical Perspective" (in en). International Astronomical Union Colloquium 91: 9–22. doi:10.1017/S0252921100105809.
39. ↑ Pickover, Clifford (2008) (in en). Archimedes to Hawking: Laws of Science and the Great Minds Behind Them. Oxford University Press. ISBN 978-0-19-979268-9. https://books.google.com/books?id=SQXcpvjcJBUC&pg=PA105.
40. ↑ Swain, Mayadhar (2012). "India's Greatest Mathematician Brahmagupta". Science Horizon: 37–40. https://www.academia.edu/16470812.
41. ↑ Thurston, Hugh (1996), Early Astronomy, Springer Science & Business Media, pp. 204–, ISBN 978-0-387-94822-5, https://books.google.com/books?id=rNpHjqxQQ9oC&pg=PP204
42. ↑ Ansari, S.M.R. (March 1977). "Aryabhata I, His Life and His Contributions". Bulletin of the Astronomical Society of India 5 (1): 10–18. Bibcode: 1977BASI....5...10A.
43. ↑ Saranathan, Jayasree. "No axial precession of the earth proven by Archaeoastronomy of ancient monuments". https://www.academia.edu/44178992. [self-published source?]
44. ↑ Stephenson, F. Richard (1997). "Observations of eclipses by medieval Arab astronomers". Historical Eclipses and Earth's Rotation. pp. 456–500. doi:10.1017/CBO9780511525186. ISBN 978-0-521-46194-8.
45. ↑ Covington, Richard. "Rediscovering Arabic Science". http://archive.aramcoworld.com/issue/200703/rediscovering.arabic.science.htm.
46. ↑ "Islamic Educational, Scientific and Cultural Organization – ISESCO". http://www.isesco.org.ma/english/publications/Architects/P24.php.
47. ↑ Toomer, G. J. (1969), "The Solar Theory of az-Zarqāl: A History of Errors", Centaurus 14 (1): 306–36, doi:10.1111/j.1600-0498.1969.tb00146.x, Bibcode: 1969Cent...14..306T , at pp. 314–17.
48. ↑ Kunitzsch, Paul (May 1986). "The Star Catalogue Commonly Appended to the Alfonsine Tables". Journal for the History of Astronomy 17 (2): 89–98. doi:10.1177/002182868601700202. Bibcode: 1986JHA....17...89K.
49. ↑ The Cosmic Winter, Clube and Napier. Blackwell Publishing, First Edition (May 1990)
50. ↑ Jack B., Hartung (1976). "Was the Formation of a 20-km Diameter Impact Crater on the Moon Observed on June 18, 1178?". Meteoritics 11 (3): 187–194. doi:10.1111/j.1945-5100.1976.tb00319.x. Bibcode: 1976Metic..11..187H.
51. ↑ Setia, Adi (2004), "Fakhr Al-Din Al-Razi on Physics and the Nature of the Physical World: A Preliminary Survey", Islam & Science 2, http://findarticles.com/p/articles/mi_m0QYQ/is_2_2/ai_n9532826/, retrieved 2010-03-02
52. ↑ "Alfonsine tables". Enciclopedia Columbia (Columbia University Press). 2018. "a revision and improvement of the Ptolemaic tables and were compiled at Toledo, Spain, by about 50 astronomers assembled for the purpose by Alfonso X of Castile".
53. ↑ Owen Gingerich, Gutenberg's Gift pp. 319–28 in Library and information services in astronomy V (Astron. Soc. Pacific Conference Series vol. 377, 2007).
54. ↑ Kennedy, E. S. (1986-06-01). "The Astronomy of Levi ben Gerson (1288–1344): A Critical Edition of Chapters 1–20 with Translation and Commentary. Levi ben Gerson, Bernard R. Goldstein". Isis 77 (2): 371–372. doi:10.1086/354184.
55. ↑ Goldstein, Bernard R. (November 1996). "Levi Ben Gerson and the Brightness of Mars". Journal for the History of Astronomy 27 (4): 297–300. doi:10.1177/002182869602700402. Bibcode: 1996JHA....27..297G.
56. ↑ Swerdlow, Noel M. (1973-12-31). "The Derivation and First Draft of Copernicus's Planetary Theory: A Translation of the Commentariolus with Commentary". Proceedings of the American Philosophical Society 117 (6): 424. Bibcode: 1973PAPhS.117..423S.
57. ↑ Abbud, Fuad (1962). "The Planetary Theory of Ibn al-Shatir: Reduction of the Geometric Models to Numerical Tables". The University of Chicago Press 53: 492–499.
58. ↑ Kirschner, Stefan (2021), Zalta, Edward N., ed., Nicole Oresme (Fall 2021 ed.), Metaphysics Research Lab, Stanford University, https://plato.stanford.edu/archives/fall2021/entries/nicole-oresme/, retrieved 2022-11-05
59. ↑ Wallace, William A. (1981) (in en). Prelude to Galileo: Essays on Medieval and Sixteenth-Century Sources of Galileo's Thought. Springer Netherlands. ISBN 978-90-277-1216-5. https://books.google.com/books?id=2Ix6kR6iN-UC&pg=PA42.
60. ↑ Hagen, J. (1911). "Nicholas of Cusa". The Catholic Encyclopedia. 11. Robert Appleton Company. https://www.newadvent.org/cathen/11060b.htm. Retrieved 2008-10-13.
61. ↑ Dick, Steven J. Plurality of Worlds: The Extraterrestrial Life Debate from Democritus to Kant. Cambridge University Press (June 29, 1984). pp. 35–42.
62. ↑ George G. Joseph (2000). The Crest of the Peacock: Non-European Roots of Mathematics, p. 421. Princeton University Press. [ISBN missing]
63. ↑ Koyré, Alexandre (1973). The Astronomical Revolution: Copernicus – Kepler – Borelli. Ithaca, New York: Cornell University Press. pp. 18–28. ISBN 978-0-8014-0504-4. ; (Swerdlow 1973)
64. ↑ Copernicus, Nicolaus (1992). Czartoryski, Pawel. ed. The manuscripts of Nicholas Copernicus' minor works; facsimiles. Krakow: Polish Academy of Sciences. pp. 20, 208–52. ISBN 83-01-10562-3. http://www.kpbc.ukw.edu.pl/dlibra/plain-content?id=48794.
65. ↑ Three Copernican Treatises:The Commentariolus of Copernicus; The Letter against Werner; The Narratio Prima of Rheticus (Second Edition, revised ed.). New York: Dover Publications. 2004. pp. 6–7 & 57–90. ISBN 978-0-486-43605-0. https://books.google.com/books?id=ceSnipu4MykC. .
66. ↑ Nancy Smiler Levinson (2001). Magellan and the First Voyage Around the World. Houghton Mifflin Harcourt. ISBN 978-0-395-98773-5. https://books.google.com/books?id=1PbBzjBuW8IC&pg=PA39. Retrieved 31 July 2010.
67. ↑ Dreyer, John L E (1906). History of the planetary systems from Thales to Kepler. Cambridge University Press. p. 342. https://archive.org/details/historyofplaneta00dreyuoft.
68. ↑ Westman, Robert S. (2011). The Copernican Question: Prognostication, Skepticism, and Celestial Order. University of California Press. p. 236. ISBN 9780520948167. https://books.google.com/books?id=iEueQqLQyiIC&pg=PA236. Retrieved August 7, 2013.
69. ↑ R. Lang, Kenneth; Charles Allen Whitney (1991). Wanderers in Space. CUP Archive. pp. 240. ISBN 978-0-521-42252-9.
70. ↑ Dershowitz, D.; Reingold, E. M (2008). Calendrical Calculations (3rd ed.). Cambridge University Press. p. 45. "The calendar in use today in most of the world is the Gregorian or new-style calendar designed by a commission assembled by Pope Gregory XIII in the sixteenth century"
71. ↑ Bruno, Giordano. "Third Dialogue". On the infinite universe and worlds. http://www.positiveatheism.org/hist/brunoiuw3.htm.
72. ↑ "Giordano Bruno: On the Infinite Universe and Worlds (De l'Infinito Universo et Mondi) Introductory Epistle: Argument of the Third Dialogue". http://www.positiveatheism.org/hist/brunoiuw0.htm#IUW0III.
73. ↑ Hatch, Robert. "Early Geo-Heliocentric models". Dr. Robert A. Hatch. http://users.clas.ufl.edu/ufhatch/pages/03-Sci-Rev/SCI-REV-Home/resource-ref-read/chief-systems/08-0TYCHO5-WSYS.html.
74. ↑ Malin, Stuart; Barraclough, David (2000). "Gilbert's De Magnete: An early study of magnetism and electricity". Eos, Transactions American Geophysical Union 81 (21): 233. doi:10.1029/00EO00163. Bibcode: 2000EOSTr..81..233M. http://www.phy6.org/earthmag/demagrev.htm. Retrieved 6 November 2018.
75. ↑ Gillispie, Charles Coulston (1960). The Edge of Objectivity: An Essay in the History of Scientific Ideas. Princeton University Press. pp. 3–6. ISBN 0-691-02350-6. https://archive.org/details/edgeofobjectivit00char/page/n13/mode/2up.
76. ↑ Astronomia nova Aitiologitis, seu Physica Coelestis tradita Commentariis de Motibus stellae Martis ex observationibus G.V. Tychnonis. Prague 1609; Engl. tr. W.H. Donahue, Cambridge 1992.
77. ↑ King, C. C. (2003). The History of the Telescope. Dover Publications. pp. 30–32. ISBN 978-0-486-43265-6.
78. ↑ Edgerton, Samuel Y. (2009). The Mirror, the Window, and the Telescope: How Renaissance Linear Perspective Changed Our Vision of the Universe. Cornell University Press. pp. 155–159. ISBN 978-0-8014-7480-4.
79. ↑ Drake, S. (1978). Galileo at Work. University of Chicago Press. pp. 152. ISBN 978-0-226-16226-3.
80. ↑ Cain, Fraser (3 July 2008). "History of Saturn". http://www.universetoday.com/15390/history-of-saturn.
81. ↑ Galileo's observations of the phases of Venus (slide 4)
82. ↑ Holton, Gerald James; Brush, Stephen G. (2001). Physics, the Human Adventure: From Copernicus to Einstein and Beyond (3rd paperback ed.). Piscataway, NJ: Rutgers University Press. pp. 40–41. ISBN 978-0-8135-2908-0. https://books.google.com/books?id=czaGZzR0XOUC&pg=PA40. Retrieved December 27, 2009.
83. ↑ van Helden, Albert (1976). "The Importance of the Transit of Mercury of 1631". Journal for the History of Astronomy 7: 1. doi:10.1177/002182867600700101. Bibcode: 1976JHA.....7....1V.
84. ↑ 84.0 84.1 Bergeron, Jacqueline, ed (2013). Highlights of Astronomy: As Presented at the XXIst General Assembly of the IAU, 1991. Springer Science & Business Media. pp. 521. ISBN 978-94-011-2828-5.
85. ↑ Stephen Pumfrey (15 April 2009). "Harriot's maps of the Moon: new interpretations". Notes and Records of the Royal Society 63 (2): 163–168. doi:10.1098/rsnr.2008.0062.
86. ↑ Kollerstrom, Nicholas (1998). "Horrocks and the Dawn of British Astronomy". University College London. http://www.dioi.org/kn/birth.htm.
87. ↑ Gillispie, Charles Coulston (1960). The Edge of Objectivity: An Essay in the History of Scientific Ideas. Princeton University Press. p. 100. ISBN 0-691-02350-6. https://archive.org/details/edgeofobjectivit0000gill.
88. ↑ Ratkowski, Rob; Foster, Jim (May 31, 2014). "Libration of the Moon". Earth Science Picture of the Day. https://epod.usra.edu/blog/2014/05/libration-of-the-moon.html.
89. ↑ Ley, Willy (June 1966). "For Your Information". Galaxy Science Fiction: 94–106.
90. ↑ Rogers, John H. (1995). The Giant Planet Jupiter. Cambridge University Press. pp. 6. ISBN 978-0521410083.
91. ↑ "Lifting Titan's Veil". Cambridge. p. 4. https://assets.cambridge.org/052179/3483/sample/0521793483ws.pdf.
92. ↑ Goldstein, S. J. (1985). "Christiaan Huygens' measurement of the distance to the Sun". The Observatory 105: 32. Bibcode: 1985Obs...105...32G.
93. ↑ 93.0 93.1 93.2 93.3 Van Helden, Albert (2009). "The beginnings, from Lipperhey to Huygens and Cassini". Experimental Astronomy 25 (1–3). doi:10.1007/s10686-009-9160-y. Bibcode: 2009ExA....25....3V.
94. ↑ A. Rupert Hall (1996). Isaac Newton: Adventurer in Thought. Cambridge University Press. p. 67. ISBN 978-0-521-56669-8. https://archive.org/details/isaacnewtonadven0000hall.
95. ↑ "'Astronomical Unit', or Earth-Sun Distance, Gets an Overhaul". http://www.scientificamerican.com/article.cfm?id=astronomical-unit-or-earth-sun-distance-gets-an-overhaul.
96. ↑ Bobis, Laurence; Lequeux, James (July 2008). "Cassini, Rømer and the velocity of light". Journal of Astronomical History and Heritage 11 (2): 97–105. doi:10.3724/SP.J.1440-2807.2008.02.02. Bibcode: 2008JAHH...11...97B.
97. ↑ Cassini, Gian Domenico (Jean-Dominique) (Cassini I) (2008). Complete Dictionary of Scientific Biography. Detroit: Charles Scribner's Sons. pp. 100–104.
98. ↑ Newton, Sir Isaac (1729). The Mathematical Principles of Natural Philosophy, Volume II. Benjamin Motte. p. 220. https://archive.org/details/bub_gb_6EqxPav3vIsC.
99. ↑ "solar (adj.)". https://www.etymonline.com/word/solar.
100. ↑ Lancaster-Brown, Peter (1985). Halley & His Comet. Blandford Press. pp. 78. ISBN 0-7137-1447-6. https://archive.org/details/halleyhiscomet00pete.
101. ↑ Westfall, John; Sheehan, William (2014). Celestial Shadows: Eclipses, Transits, and Occultations. Springer. p. 115. ISBN 978-1-4939-1535-4. https://books.google.com/books?id=W9mLBQAAQBAJ&pg=PA115.
102. ↑ Allan Chapman (2004). "Jeremiah Horrocks, William Crabtree, and the Lancashire observations of the transit of Venus of 1639". Proceedings of the International Astronomical Union (Cambridge University Press) 2004: 3–26. doi:10.1017/S1743921305001225.
103. ↑ Otto Neugebauer (1975). A History of Ancient Mathematical Astronomy. Birkhäuser. p. 1084. ISBN 978-3-540-06995-9. https://books.google.com/books?id=vO5FCVIxz2YC&q=proper+motion+angle&pg=PA1085.
104. ↑ Bradley, James (1727–1728). "A Letter from the Reverend Mr. James Bradley Savilian Professor of Astronomy at Oxford, and F.R.S. to Dr. Edmond Halley Astronom. Reg. &c. Giving an Account of a New Discovered Motion of the Fix'd Stars.". Phil. Trans. R. Soc. 35 (406): 637–661. doi:10.1098/rstl.1727.0064. Bibcode: 1727RSPT...35..637B.
105. ↑ Levallois, Jean-Jacques (1986). "La Vie des sciences". pp. 277–284, 288. https://gallica.bnf.fr/ark:/12148/bpt6k5470853s.
106. ↑ Poynting, J. H. (1894). The mean density of the earth. pp. 12–22. https://archive.org/download/meandensityofear00poynuoft/meandensityofear00poynuoft.pdf.
107. ↑ Poynting, J.H. (1913). The Earth: its shape, size, weight and spin. Cambridge. pp. 50–56. https://books.google.com/books?id=whA9AAAAIAAJ&pg=PA50.
108. ↑ Koon, W. S.; Lo, M. W.; Marsden, J. E.; Ross, S. D. (2006). Dynamical Systems, the Three-Body Problem, and Space Mission Design. p. 9. http://www.cds.caltech.edu/~marsden/books/Mission_Design.html. Retrieved 2008-06-09. (16MB)
109. ↑ Euler, Leonhard (1765). De motu rectilineo trium corporum se mutuo attrahentium. http://www.math.dartmouth.edu/~euler/docs/originals/E327.pdf.
110. ↑ Wolf, Abraham (1939). History of Science, Technology, and Philosophy in the Eighteenth Century. New York: Macmillan. pp. 232.
111. ↑ Woolfson, M.M. (1993). "Solar System – its origin and evolution". Q. J. R. Astron. Soc. 34: 1–20. Bibcode: 1993QJRAS..34....1W. For details of Kant's position, see Stephen Palmquist, "Kant's Cosmogony Re-Evaluated", Studies in History and Philosophy of Science 18:3 (September 1987), pp. 255–269.
112. ↑ Hoffmann, Christian Gotthold (1759 January 20) "Nachricht von dem Kometen, welcher seit dem 25. December gesehen wird" (News of the comet, which has been seen since the 25th of December), Dreßdnischen Gelehrten Anzeigen, 2nd issue.
113. ↑ Hughes, D. W. (30 September 1987). "The history of Halley's Comet". Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences 323 (1572): 349–367. doi:10.1098/rsta.1987.0091. Bibcode: 1987RSPTA.323..349H.
114. ↑ Shiltsev, Vladimir (March 2014). "The 1761 Discovery of Venus' Atmosphere: Lomonosov and Others". Journal of Astronomical History and Heritage 17 (1): 85–112. doi:10.3724/SP.J.1440-2807.2014.01.06. Bibcode: 2014JAHH...17...85S.
115. ↑ 115.0 115.1 Hoskin, Michael (1992-06-26). "Bodes' law and the discovery of Ceres". Observatorio Astronomico di Palermo 'Giuseppe S. Vaiana'. http://www.astropa.unipa.it/HISTORY/hoskin.html.
116. ↑ Hough, Richard (1994). Captain James Cook. Hodder and Stoughton. pp. 239. ISBN 0-340-82556-1.
117. ↑ Danson, Edwin (2006). Weighing the World. Oxford University Press. pp. 153–154. ISBN 978-0-19-518169-2. https://books.google.com/books?id=UNH_Y7ERFeoC&pg=PA153.
118. ↑ Dreyer, J. L. E. (1912). The Scientific Papers of Sir William Herschel. Vol. 1. Royal Society and Royal Astronomical Society. pp. 100. ISBN 978-1-84371-022-6.
119. ↑ "Original Messier Catalog of 1781". 10 November 2007. http://messier.seds.org/xtra/Mcat/mcat1781.html#messier1781.
120. ↑ Herschel, W. S. (1787). "An Account of the Discovery of Two Satellites Revolving Round the Georgian Planet". Philosophical Transactions of the Royal Society of London 77: 125–129. doi:10.1098/rstl.1787.0016.
121. ↑ "Planetary Body Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology Science Center. https://planetarynames.wr.usgs.gov/append7.html.
122. ↑ Owen, T. C. (2001) "Solar system: origin of the solar system", Encyclopædia Britannica, Deluxe CDROM edition
123. ↑ Poynting, John H. (1894). The Mean Density of the Earth: An essay to which the Adams prize was adjudged in 1893. London: C. Griffin & Co.. https://archive.org/details/meandensityeart00poyngoog.
124. ↑ Landau, Elizabeth (26 January 2016). "Ceres: Keeping Well-Guarded Secrets for 215 Years". http://www.jpl.nasa.gov/news/news.php?feature=4824.
125. ↑ "Astronomical Serendipity". NASA JPL. http://dawn.jpl.nasa.gov/DawnCommunity/flashbacks/fb_06.asp.
126. ↑ Soter, Steven (2006). "What is a Planet?". The Astronomical Journal 132 (6): 2513–2519. doi:10.1086/508861. Bibcode: 2006AJ....132.2513S.
127. ↑ Cunningham, Clifford (1984). "William Herschel and the First Two Asteroids". The Minor Planet Bulletin (Dance Hall Observatory, Ontario) 11: 3. Bibcode: 1984MPBu...11....3C.
128. ↑ "JPL Small-Body Database Browser: 3 Juno". http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3.
129. ↑ Lynn, W. T. (February 1907). "The discovery of Vesta". The Observatory 30: 103–105. Bibcode: 1907Obs....30..103L.
130. ↑ Alexander, A. F. O'D. (1970). Charles Coulston Gillespie. ed. Dictionary of Scientific Biography. 2. New York: Charles Scribner's Sons. pp. 359–360. ""Bouvard, Alexis""
131. ↑ Pierre-Simon, marquis de Laplace (1798–1825). Traité de mécanique céleste. http://catalog.hathitrust.org/Record/100242426.
132. ↑ Henderson, Thomas (1839). "On the Parallax of α Centauri". Monthly Notices of the Royal Astronomical Society 4 (19): 168–170. doi:10.1093/mnras/4.19.168. Bibcode: 1839MNRAS...4..168H.
133. ↑ Bessel, F. W. (1838b). "On the parallax of 61 Cygni". Monthly Notices of the Royal Astronomical Society 4 (17): 152–161. doi:10.1093/mnras/4.17.152. Bibcode: 1838MNRAS...4..152B.
134. ↑ Kalfus, Skye (2010). "Across the Spectrum". Chemical Heritage Magazine (Chemical Heritage Foundation) 28 (2). https://www.sciencehistory.org/distillations/magazine/across-the-spectrum. Retrieved 23 March 2018.
135. ↑ 135.0 135.1 135.2 Kollerstrom, N. (2001). "A Neptune Discovery Chronology". The British Case for Co-prediction. University College London. http://www.ucl.ac.uk/sts/nk/neptune/chron.htm.
136. ↑ Hockey, Thomas (2009). The Biographical Encyclopedia of Astronomers. Springer Publishing. ISBN 978-0-387-31022-0. http://www.springerreference.com/docs/html/chapterdbid/58599.html. Retrieved 22 August 2012.
137. ↑ Hilton, J. (2001). "When Did the Asteroids Become Minor Planets?". US Naval Observatory (USNO). http://www.usno.navy.mil/USNO/astronomical-applications/astronomical-information-center/minor-planets.
138. ↑ Lassell, W. (1846). "Discovery of supposed ring and satellite of Neptune". Monthly Notices of the Royal Astronomical Society 7 (9): 157. doi:10.1093/mnras/7.9.154. Bibcode: 1846MNRAS...7..157L.
139. ↑ W. Lassell (1848). "Discovery of a New Satellite of Saturn". Monthly Notices of the Royal Astronomical Society 8 (9): 195–197. doi:10.1093/mnras/8.9.195a. Bibcode: 1848MNRAS...8..195L. https://zenodo.org/record/1431913.
140. ↑ Bond, W.C. (1848). "Discovery of a new satellite of Saturn". Monthly Notices of the Royal Astronomical Society 9 (1): 1–2. doi:10.1093/mnras/9.1.1. Bibcode: 1848MNRAS...9....1B. https://zenodo.org/record/1431915.
141. ↑ NASA. "What is the Roche limit?". NASA – JPL. http://saturn.jpl.nasa.gov/faq/FAQSaturn/#q11.
142. ↑ Leuschner, A. O. (1922-07-15). "Comparison of Theory with Observation for the Minor planets 10 Hygiea and 175 Andromache with Respect to Perturbations by Jupiter". Proceedings of the National Academy of Sciences of the United States of America 8 (7): 170–173. doi:10.1073/pnas.8.7.170. PMID 16586868. Bibcode: 1922PNAS....8..170L.
143. ↑ Lassell, W. (1851). "On the interior satellites of Uranus". Monthly Notices of the Royal Astronomical Society 12: 15–17. doi:10.1093/mnras/12.1.15. Bibcode: 1851MNRAS..12...15L.
144. ↑ Harman, Peter M. (2004). "Oxford Dictionary of National Biography (online ed.)". Oxford Dictionary of National Biography (online ed.). Oxford University Press. pp. 508. doi:10.1093/ref:odnb/5624. ""Maxwell, James"". (Subscription or UK public library membership required.)
145. ↑ Pohle, J. (1913). "Angelo Secchi". in Herbermann, Charles. Catholic Encyclopedia. New York: Robert Appleton Company. "[...][his] theory of the unity of the world and of the identity of the fixed stars and the sun received most profound scientific demonstration and confirmation.".
146. ↑ Schmadel, Lutz D. (2007). "(4062) Schiaparelli". Dictionary of Minor Planet Names – (4062) Schiaparelli. Springer Berlin Heidelberg. p. 347. doi:10.1007/978-3-540-29925-7_4041. ISBN 978-3-540-00238-3.
147. ↑ Thomson, William (August 3, 1871). "Inaugural Address of Sir William Thomson". Nature 4 (92): 261–278 [268]. doi:10.1038/004261a0. PMC 2070380. Bibcode: 1871Natur...4..261.. https://books.google.com/books?id=IogCAAAAIAAJ&pg=PA268. "Frankland and Lockyer find the yellow prominences to give a very decided bright line not far from D, but hitherto not identified with any terrestrial flame. It seems to indicate a new substance, which they propose to call Helium".
148. ↑ Hall, Asaph (1877). "Observations of the Satellites of Mars". Astronomische Nachrichten 91 (1): 11–14. doi:10.1002/asna.18780910103. Bibcode: 1877AN.....91...11H. https://zenodo.org/record/1424707. Retrieved 1 July 2021.
149. ↑ Michelson, Albert A.; Morley, Edward W. (1887). "On the Relative Motion of the Earth and the Luminiferous Ether". American Journal of Science 34 (203): 333–345. doi:10.2475/ajs.s3-34.203.333. Bibcode: 1887AmJS...34..333M.
150. ↑ Barnard, E. E. (12 October 1892). "Discovery and observations of a fifth satellite to Jupiter". The Astronomical Journal 12 (11): 81–85. doi:10.1086/101715. Bibcode: 1892AJ.....12...81B.
151. ↑ Kidger, Mark (2005). Astronomical Enigmas: Life on Mars, the Star of Bethlehem, and Other Milky Way Mysteries. JHU Press. pp. 110. ISBN 0801880262.
152. ↑ Thomson, William (1862). "On the Age of the Sun's Heat". Macmillan's Magazine 5: 388–393. https://zapatopi.net/kelvin/papers/on_the_age_of_the_suns_heat.html.
153. ↑ Pickering, E. C. (24 March 1899). "A New Satellite of Saturn". Science 9 (221): 456. doi:10.1126/science.9.221.456. PMID 17844472.
154. ↑ England, P.; Molnar, P.; Righter, F. (January 2007). "John Perry's neglected critique of Kelvin's age for the Earth: A missed opportunity in geodynamics". GSA Today 17 (1): 4–9. doi:10.1130/GSAT01701A.1.
155. ↑ "588 Achilles (1906 TG)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=588.
156. ↑ Nemiroff, R.; Bonnell, J., eds (14 November 2007). "Tunguska: The Largest Recent Impact Event". Astronomy Picture of the Day. NASA. https://apod.nasa.gov/apod/ap071114.html.
157. ↑ Braile, L.W.; Chiang, C.S. (1986). "The Continental Mohorovičić Discontinuity: Results from Near-Vertical and Wide-Angle Seismic Reflection Studies". in Barazangi, Muawia; Brown, Larry. Reflection Seismology: A Global Perspective. Geodynamics Series. 13. pp. 257–272. doi:10.1029/GD013. ISBN 978-0-87590-513-6.
158. ↑ Jacoby, W. R. (January 1981). "Modern concepts of earth dynamics anticipated by Alfred Wegener in 1912". Geology 9 (1): 25–27. doi:10.1130/0091-7613(1981)9<25:MCOEDA>2.0.CO;2. Bibcode: 1981Geo.....9...25J.
159. ↑ Glass, I.S. (2008). Proxima, the Nearest Star (other than the Sun). Cape Town: Mons Mensa.
160. ↑ Dyson, F.W.; Eddington, A.S.; Davidson, C.R. (1920). "A Determination of the Deflection of Light by the Sun's Gravitational Field, from Observations Made at the Solar eclipse of May 29, 1919". Philosophical Transactions of the Royal Society A 220 (571–581): 291–333. doi:10.1098/rsta.1920.0009. Bibcode: 1920RSPTA.220..291D. https://zenodo.org/record/1432106.
161. ↑ Pais, Abraham (1982), 'Subtle is the Lord ...' The Science and life of Albert Einstein, Oxford University Press, pp. 253–254, ISBN 978-0-19-853907-0, https://archive.org/details/subtleislordscie00pais
162. ↑ Evans, Ben (April 25, 2020). "The Great Debate – 100 years later" (in en). https://astronomy.com/news/2020/04/the-great-debate-of-shapley-and-curtis--100-years-later.
163. ↑ Tombaugh, Clyde W. (1946). "The Search for the Ninth Planet, Pluto". Astronomical Society of the Pacific Leaflets 5 (209): 73–80. Bibcode: 1946ASPL....5...73T.
164. ↑ "Obituary: Seth B. Nicholson". Physics Today 16 (9): 106. September 1963. doi:10.1063/1.3051113.
165. ↑ Jansky, K.G. (October 1933). "Electrical Disturbances Apparently of Extraterrestrial Origin". Proceedings of the IRE 21 (10): 1387–1398. doi:10.1109/JRPROC.1933.227458. Bibcode: 1933PIRE...21.1387J.
166. ↑ Jansky, Karl G. (July 1933). "Radio Waves from Outside the Solar System". Nature 132 (3323): 66. doi:10.1038/132066a0. Bibcode: 1933Natur.132...66J.
167. ↑ Bilstein, Roger E. (2001), Flight in America: From the Wrights to the Astronauts (3rd ed.), JHU Press, p. 118, ISBN 0801866855, https://books.google.com/books?id=PKeVjYtzLr0C&pg=PA118
168. ↑ Bethe, H.; Critchfield, C. (1938). "On the Formation of Deuterons by Proton Combination". Physical Review 54 (10): 862. doi:10.1103/PhysRev.54.862.2. Bibcode: 1938PhRv...54Q.862B.
169. ↑ Bethe, H. (1939). "Energy Production in Stars". Physical Review 55 (1): 434–456. doi:10.1103/PhysRev.55.434. PMID 17835673. Bibcode: 1939PhRv...55..434B.
170. ↑ 170.0 170.1 "Gerard Kuiper Papers". University of Arizona. http://www.azarchivesonline.org/xtf/view?docId=ead/uoa/UAMS480.xml.
171. ↑ "First Photo From Space". October 24, 2006. https://www.airspacemag.com/space/the-first-photo-from-space-13721411/.
172. ↑ Redd, Nola Taylor (October 4, 2018). "Oort Cloud: The Outer Solar System's Icy Shell". Space.com. https://www.space.com/16401-oort-cloud-the-outer-solar-system-s-icy-shell.html.
173. ↑ David Jewitt. "WHY "KUIPER" BELT?". University of Hawaii. http://www2.ess.ucla.edu/~jewitt/kb/gerard.html.
174. ↑ "'Doughnuts' of radiation ring earth in space". Victoria Advocate. Associated Press (Texas): p. 1A. December 28, 1958. https://news.google.com/newspapers?id=kCxQAAAAIBAJ&sjid=HVYDAAAAIBAJ&pg=3307,5547467.
175. ↑ "Display: Explorer 6 1959-004A". NASA. 28 October 2021. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1959-004A.
176. ↑ Harvey, Brian (2011). Russian space probes: scientific discoveries and future missions. New York: Springer. ISBN 978-1-4419-8150-9.
177. ↑ "Mariner 2". US National Space Science Data Center. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1962-041A.
178. ↑ "Mariner 4". NSSDC Master Catalog. NASA. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1964-077A.
179. ↑ 179.0 179.1 179.2 Siddiqi, Asif A. (2018). Beyond Earth: A Chronicle of Deep Space Exploration, 1958–2016. The NASA history series (second ed.). Washington, D.C.: NASA History Program Office. pp. 1–2. SP2018-4041. ISBN 9781626830424. https://www.nasa.gov/sites/default/files/atoms/files/beyond-earth-tagged.pdf.
180. ↑ Harvey, Brian (2007). Russian planetary exploration. Springer. pp. 98–101. ISBN 978-0-387-46343-8. https://books.google.com/books?id=jKmIclMIwPAC&pg=PA101.
181. ↑ Overbye, Dennis (December 21, 2018). "Apollo 8's Earthrise: The Shot Seen Round the World - Half a century ago today, a photograph from the moon helped humans rediscover Earth.". The New York Times. https://www.nytimes.com/2018/12/21/science/earthrise-moon-apollo-nasa.html.
182. ↑ Jones, Eric M., ed (1995). "The First Lunar Landing". Apollo 11 Lunar Surface Journal (NASA). http://www.hq.nasa.gov/alsj/a11/a11.landing.html. Retrieved June 13, 2013.
183. ↑ "NASA Lunar Sample Laboratory Facility". NASA. 1 September 2016. https://curator.jsc.nasa.gov/lunar/lun-fac.cfm.
184. ↑ "Science: Onward from Venus". Time. 8 February 1971. http://www.time.com/time/magazine/article/0,9171,909834,00.html. Retrieved 2 January 2013.
185. ↑ "Mariner 9: Details". National Space Science Data Center. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1971-051A.
186. ↑ "NASA Programs & Missions Historical Log". http://mars.jpl.nasa.gov/programmissions/missions/log/.
187. ↑ Perminov, V.G. (July 1999). The Difficult Road to Mars – A Brief History of Mars Exploration in the Soviet Union. NASA Headquarters History Division. pp. 34–60. ISBN 0-16-058859-6. https://archive.org/details/difficultroadtom00perm/page/34.
188. ↑ "Massive Coronal Hole on the Sun". 24 June 2013. http://www.nasa.gov/mission_pages/sunearth/news/gallery/20130618-coronalhole.html.
189. ↑ Fimmel, R. O.; W. Swindell; E. Burgess (1974). SP-349/396 Pioneer Odyssey. NASA-Ames Research Center. SP-349/396. https://history.nasa.gov/SP-349/ch8.htm. Retrieved January 9, 2011.
190. ↑ "Solar System Exploration Multimedia Gallery: Venera 9". http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=3563.
191. ↑ Williams, David R. Dr. (December 18, 2006). "Viking Mission to Mars". NASA. https://nssdc.gsfc.nasa.gov/planetary/viking.html.
192. ↑ Elliot, J. L.; Dunham, E.; Mink, D. (May 1977). "The rings of Uranus". Nature 267 (5609): 328–330. doi:10.1038/267328a0. Bibcode: 1977Natur.267..328E.
193. ↑ Kowal, Charles T.; Liller, William; Marsden, Brian G. (December 1978). "The discovery and orbit of /2060/ Chiron". In: Dynamics of the Solar System; Proceedings of the Symposium, Tokyo, Japan, May 23–26, 1978 81: 245–250. Bibcode: 1979IAUS...81..245K.
194. ↑ Littmann, Mark (1990). Planets Beyond: Discovering the Outer Solar System. pp. 173–177, including the essay "A Moment of Perception" by James W. Christy.
195. ↑ "Pioneer Venus 1". Solar System Exploration. NASA. http://solarsystem.nasa.gov/missions/profile.cfm?Sort=Target&Target=Venus&MCode=Pioneer_Venus_01&Display=ReadMore.
196. ↑ Goldreich, Peter; Tremaine, Scott (1978). "The velocity dispersion in Satun's rings". Icarus 34 (2): 227–239. doi:10.1016/0019-1035(78)90164-1. Bibcode: 1978Icar...34..227G. https://www.sciencedirect.com/science/article/abs/pii/0019103578901641.
197. ↑ Richard O. Fimmel (1980). Pioneer: First to Jupiter, Saturn, and beyond. NASA (SP-446).
198. ↑ "Historical Background of Saturn's Rings". http://www.solarviews.com/eng/saturnbg.htm.
199. ↑ "Encounter with Jupiter". NASA. https://voyager.jpl.nasa.gov/science/jupiter.html.
200. ↑ 200.0 200.1 200.2 National Aeronautics and Space Administration "Voyager 2" NASA Science: Solar System Exploration. Updated January 26, 2018. Accessed December 12, 2018.
201. ↑ "Encounter with Saturn". NASA. https://voyager.jpl.nasa.gov/science/saturn.html.
202. ↑ "NSSDC Master Catalog – Venera 13 Descent Craft". NASA National Space Science Data Center. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1981-106D.
203. ↑ "NSSDCA Master Catalog – Giotto – Trajectory Details". NASA. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1985-056A.
204. ↑ "Where Comets Come From". Discovery Magazine. http://discovermagazine.com/1995/nov/wherecometscomef583.
205. ↑ "STS-31". NASA. http://science.ksc.nasa.gov/shuttle/missions/sts-31/mission-sts-31.html.
206. ↑ Nemiroff, R.; Bonnell, J., eds (March 11, 1996). "Hubble Telescope Maps Pluto". Astronomy Picture of the Day. NASA. https://apod.nasa.gov/apod/ap960311.html.
207. ↑ "Hubble recruited to find New Horizons probe post-Pluto target". nasaspaceflight.com. June 16, 2014. http://www.nasaspaceflight.com/2014/06/hubble-recruited-new-horizons-pluto-target/.
208. ↑ "NASA's Hubble Observations Suggest Underground Ocean on Jupiter's Largest Moon" (in en). Space Telescope Science Institute. March 12, 2015. http://hubblesite.org/contents/news-releases/2015/news-2015-09.
209. ↑ Jewitt, David (April 12, 2022). "Hubble Confirms Largest Comet Nucleus Ever Seen". https://www.nasa.gov/feature/goddard/2022/hubble-confirms-largest-comet-nucleus-ever-seen.
210. ↑ "The Solar System Family Portrait". Planetary.org. http://www.planetary.org/multimedia/space-images/charts/solar-system-family-portrait.html.
211. ↑ "A Pale Blue Dot". The Planetary Society. http://www.planetary.org/explore/space-topics/earth/pale-blue-dot.html.
212. ↑ "Magellan". NASA / National Space Science Data Center. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1989-033B.
213. ↑ 213.0 213.1 Meltzer, Michael (2007). Mission to Jupiter: A History of the Galileo Project. The NASA History Series. NASA. SP-4231. OCLC 124150579. https://history.nasa.gov/sp4231.pdf. Retrieved 19 January 2021.
214. ↑ "15760 Albion (1992 QB1)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=15760.
215. ↑ Belton, Michael J.S.; Chapman, Clark R.; Klaasen, Kenneth P.; Harch, Ann P.; Thomas, Peter C.; Veverka, Joseph; McEwen, Alfred S.; Pappalardo, Robert T. (1996). "Galileo's Encounter with 243 Ida: An Overview of the Imaging Experiment". Icarus 120 (1): 2–3. doi:10.1006/icar.1996.0032. Bibcode: 1996Icar..120....1B.
216. ↑ "Comet Shoemaker–Levy 9 Collision with Jupiter". National Space Science Data Center. February 2005. http://nssdc.gsfc.nasa.gov/planetary/comet.html.
217. ↑ Siddiqi, Asif A. (2018). Beyond Earth: A Chronicle of Deep Space Exploration, 1958–2016. The NASA history series (second ed.). NASA History Program Office. p. 195. SP2018-4041. ISBN 978-1-62683-042-4. https://www.nasa.gov/sites/default/files/atoms/files/beyond-earth-tagged.pdf. Retrieved 2019-11-04.
218. ↑ "NEAR Shoemaker". NASA. https://solarsystem.nasa.gov/missions/near-shoemaker/in-depth/.
219. ↑ "50000 Quaoar (2002 LM60)". Minor Planet Center. International Astronomical Union. https://www.minorplanetcenter.net/db_search/show_object?object_id=50000.
220. ↑ Mike Brown; David Rabinowitz; Chad Trujillo (2004). "Discovery of a Candidate Inner Oort Cloud Planetoid". Astrophysical Journal 617 (1): 645–649. doi:10.1086/422095. Bibcode: 2004ApJ...617..645B.
221. ↑ Tobin, Kate (November 5, 2003). "Spacecraft reaches edge of Solar System". CNN. http://edition.cnn.com/2003/TECH/space/11/05/voyager.solar.boundary/.
222. ↑ "Voyager 1 Sees Solar Wind Decline". NASA. December 13, 2010. http://solarsystem.nasa.gov/news/display.cfm?News_ID=36121.
223. ↑ "90482 Orcus (2004 DW)". Minor Planet Center. http://www.minorplanetcenter.net/db_search/show_object?object_id=90482.
224. ↑ Michael E Brown. "The electronic trail of the discovery of 2003 EL61". Caltech. http://www.gps.caltech.edu/~mbrown/planetlila/ortiz/.
225. ↑ Pablo Santos Sanz (2008-09-26). "La historia de Ataecina vs Haumea" (in es). infoastro.com. http://www.infoastro.com/200809/26ataecina-haumea.html.
226. ↑ "Overview | Cassini". https://solarsystem.nasa.gov/missions/cassini/overview/.
227. ↑ Brown, Mike (2006). "The discovery of 2003 UB313 Eris, the largest known dwarf planet". California Institute of Technology, Department of Geological Sciences. http://www.gps.caltech.edu/~mbrown/planetlila/.
228. ↑ Green, D. W. E. (13 September 2006). "(134340) Pluto, (136199) Eris, and (136199) Eris I (Dysnomia)". IAU Circular (8747): 1. Bibcode: 2006IAUC.8747....1G. http://www.cbat.eps.harvard.edu/iauc/08700/08747.html. Retrieved 12 January 2012.
229. ↑ "JPL Small-Body Database Browser: 136472 Makemake (2005 FY9)". NASA Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=136472.2005+FY9)&rft.atitle=NASA+Jet+Propulsion+Laboratory&rft_id=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=136472&rfr_id=info:sid/en.wikibooks.org:Astronomy:Timeline_of_Solar_System_astronomy">
230. ↑ Mary Beth Griggs (April 21, 2022). "Check out NASA's latest footage of a solar eclipse on Mars". The Verge. https://www.theverge.com/2022/4/21/23035514/nasa-perseverance-rover-mars-eclipse-phobos.
231. ↑ "Hayabusa". NASA's Solar System Exploration website. 8 December 2017. https://solarsystem.nasa.gov/missions/hayabusa/in-depth/.
232. ↑ IAU (August 24, 2006). "Definition of a Planet in the Solar System: Resolutions 5 and 6". IAU 2006 General Assembly (International Astronomical Union). http://www.iau.org/static/resolutions/Resolution_GA26-5-6.pdf.
233. ↑ "IAU 2006 General Assembly: Result of the IAU Resolution votes". 24 August 2006. https://www.iau.org/news/pressreleases/detail/iau0603.
234. ↑ "IAU names dwarf planet Eris". 14 September 2006. https://www.iau.org/news/pressreleases/detail/iau0605.
235. ↑ "(225088) Gonggong = 2007 OR10". Minor Planet Center. International Astronomical Union. https://www.minorplanetcenter.net/db_search/show_object?object_id=225088.
236. ↑ "IAU names fifth dwarf planet Haumea". 19 July 2008. https://www.iau.org/news/pressreleases/detail/iau0807.
237. ↑ "Fourth dwarf planet named Makemake". 17 September 2008. https://www.iau.org/news/pressreleases/detail/iau0806.
238. ↑ 238.0 238.1 "NASA's Dawn Spacecraft Hits Snag on Trip to 2 Asteroids". Space.com. August 15, 2012. http://www.space.com/17119-nasa-dawn-asteroid-spacecraft-vesta.html.
239. ↑ "JPL (ca. 2008) Cassini Equinox Mission: Methone". http://saturn.jpl.nasa.gov/science/moons/methone/.
240. ↑ "MESSENGER Completes Its First Extended Mission at Mercury". JHU – APL. March 18, 2013. http://messenger.jhuapl.edu/news_room/details.php?id=237.
241. ↑ Braga-Ribas, F.; Sicardy, B.; Ortiz, J. L.; Snodgrass, C.; Roques, F.; Vieira-Martins, R.; Camargo, J. I. B.; Assafin, M. et al. (April 2014). "A ring system detected around the Centaur (10199) Chariklo". Nature 508 (7494): 72–75. doi:10.1038/nature13155. PMID 24670644. Bibcode: 2014Natur.508...72B.
242. ↑ "Rosetta's Frequently Asked Questions". European Space Agency. http://www.esa.int/Our_Activities/Space_Science/Rosetta/Frequently_asked_questions.
243. ↑ Beatty, Kelly (12 November 2014). "Philae Lands on Its Comet – Three Times!". Sky & Telescope. http://www.skyandtelescope.com/astronomy-news/philae-lands-three-times-111220143/.
244. ↑ Landau, Elizabeth; Brown, Dwayne (March 6, 2015). "NASA Spacecraft Becomes First to Orbit a Dwarf Planet". NASA. http://www.jpl.nasa.gov/news/news.php?feature=4503.
245. ↑ "NASA's Three-Billion-Mile Journey to Pluto Reaches Historic Encounter". Johns Hopkins University Applied Physics Laboratory. July 14, 2015. http://pluto.jhuapl.edu/News-Center/News-Article.php?page=20150714-2.
246. ↑ "First Known Interstellar Visitor is an 'Oddball'". Gemini Observatory (Press release). 20 November 2017. Archived from the original on 23 November 2017. Retrieved 28 November 2017.
247. ↑ Green, Jim; Stern, S. Alan (12 December 2017). "New Horizons Kuiper Belt Extended Mission". 2017 AGU Fall Meeting. Applied Physics Laboratory. pp. 12–15. http://pluto.jhuapl.edu/News-Center/Press-Conferences/2017-12-12/resources/2017_NH_AGU_PA.pdf. Retrieved 26 December 2018.
248. ↑ "Interstellar comet with a familiar look". EurekAlert! (Press release). Astronomical Observatory, Jagiellonian University. 14 October 2019. Retrieved 14 October 2014.
249. ↑ "NASA's DART Mission Hits Asteroid in First-Ever Planetary Defense Test". NASA. 27 September 2022. https://www.nasa.gov/press-release/nasa-s-dart-mission-hits-asteroid-in-first-ever-planetary-defense-test.
250. ↑ George Dvorsky (September 27, 2022). "First Asteroid Impact Images from DART's Companion Show Tentacle-Like Debris Plume". Gizmodo. https://gizmodo.com/liciacube-images-dart-asteroid-impact-1849585958.

* v
* t
* e

Solar System

* Sun
* Mercury
* Venus
* Earth
* Mars
* Ceres
* Jupiter
* Saturn
* Uranus
* Neptune
* Pluto
* Haumea
* Makemake
* Eris

| Planets|

* Terrestrial planets
* Mercury
* Venus
* Earth
* Mars

* Giant planets
* Jupiter
* Saturn
* Uranus
* Neptune

* Dwarf planets
* Ceres
* Pluto
* Haumea
* Makemake
* Eris

|

Rings|

* Jovian
* Saturnian (Rhean)
* Charikloan
* Chironean
* Uranian
* Neptunian
* Haumean

Moons|

* Terrestrial
* Moon
* other near-Earth objects
* Martian
* Phobos
* Deimos
* Jovian
* Ganymede
* Callisto
* Io
* Europa
* all 79
* Saturnian
* Titan
* Rhea
* Iapetus
* Dione
* Tethys
* Enceladus
* Mimas
* Hyperion
* Phoebe
* all 82
* Uranian
* Titania
* Oberon
* Umbriel
* Ariel
* Miranda
* all 27
* Neptunian
* Triton
* Proteus
* Nereid
* all 14
* Plutonian
* Charon
* Nix
* Hydra
* Kerberos
* Styx
* Eridian
* Dysnomia
* Haumean
* Hiʻiaka
* Namaka
* Makemakean
* S/2015 (136472) 1

Exploration
(outline)|

* Colonization
* Discovery
* astronomy
* historical models
* timeline
* Human spaceflight
* space stations
* list
* Space probes
* timeline
* list

* Mercury
* Venus
* Moon
* mining
* Mars
* Ceres
* Asteroids
* mining
* Comets
* Jupiter
* Saturn
* Uranus
* Neptune
* Pluto
* Deep space

Hypothetical
objects|

* Fifth giant
* Nemesis
* Phaeton
* Planet Nine
* Planet V
* Planet X
* Theia
* Tyche
* Vulcan
* Vulcanoids
* Subsatellites

Lists|

* Comets
* Dwarf planets (possible)
* Gravitationally rounded objects
* Minor planets
* names
* Natural satellites
* Solar System models
* Solar System objects
* by size
* by discovery date

| Small Solar
System bodies|

* Comets
* Damocloids
* Meteoroids
* Minor planets
* moons
* Planetesimal

* Mercury-crossers
* Venus-crossers
* Venus trojans
* Near-Earth objects
* Earth-crossers
* Earth trojans
* Mars-crossers
* Mars trojans

* Asteroid belt
* Asteroids
* Ceres
* Pallas
* Juno
* Vesta
* first 1000
* families
* exceptional
* Kirkwood gap
* Main-belt comets

* Jupiter-crossers
* Jupiter trojans
* Centaurs
* Saturn-crossers
* Uranus-crossers
* Uranus trojans
* Neptune-crossers
* Neptune trojans
* Cis-Neptunian objects
* Trans-Neptunian objects

* Plutoids
* Kuiper belt
* Cubewanos
* Plutinos
* Detached objects
* Hills cloud
* Oort cloud
* Scattered disc
* Sednoids

|

Formation
and evolution|

* Accretion
* Accretion disk
* Asteroid belt
* Circumplanetary disk
* Circumstellar disc
* Circumstellar envelope
* Cosmic dust
* Debris disk
* Detached object
* Disrupted planet
* Excretion disk
* Exoplanetary Circumstellar Environments and Disk Explorer
* Exozodiacal dust
* Extraterrestrial materials
* Extraterrestrial sample curation
* Giant-impact hypothesis
* Gravitational collapse
* Hills cloud
* Interplanetary dust cloud
* Interplanetary medium
* Interplanetary space
* Interstellar cloud
* Interstellar dust
* Interstellar medium
* Interstellar space
* Kuiper belt
* List of interstellar and circumstellar molecules
* Merging stars
* Molecular cloud
* Nebular hypothesis
* Oort cloud
* Outer space
* Planetary migration
* Planetary system
* Planetesimal
* Planet formation
* Protoplanetary disk
* Ring system
* Rubble pile
* Sample-return mission
* Scattered disc
* Star formation

* Outline of the Solar System
*   *   *

Solar System → Local Interstellar Cloud → Local Bubble → Gould Belt → Orion Arm → Milky Way → Milky Way subgroup → Local Group → Local Sheet → Virgo Supercluster → Laniakea Supercluster → Observable universe → Universe
Each arrow (→) may be read as "within" or "part of".

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