Impact events have been a recurring theme in fiction since the 1800s.[1] The earliest such stories tended to depict impacts by comets,[a] though other objects such as asteroids and meteoroids became more common in the 1900s.[2] Impact events from more massive celestial objects also appear on occasion.[1] The theme increased in popularity from the 1950s onward, possibly as a result of nuclear anxiety following World War II,[4] and received additional boosts in popularity in 1980 with the publication of the Alvarez hypothesis, which states that the extinction of the dinosaurs 65 million years ago was caused by an asteroid impact that created the Chicxulub crater off the coast of Mexico,[5][6][1] and in 1994 with the collision of Comet Shoemaker–Levy 9 with Jupiter.[6][7]: 79–82
^Comets have a long history of being associated with disaster, stretching back to at least the year 1200,[2] but the conception of comets as a purely natural—as opposed to supernatural—source of destruction did not emerge until the second half of the 1700s with the work of French astronomer Jérôme Lalande.[3]: 113–114
^ abHampton, Steven (Summer 2000). Lee, Tony (ed.). "Momentos of Creation: Asteroids & Comets in SF". The Planets Project: A Science Fictional Tour of the Solar System. The Zone. No. 9. pp. 6–7. ISSN1351-5217.
^ abDetermann, Jörg Matthias (2020). "Missions and Mars". Islam, Science Fiction and Extraterrestrial Life: The Culture of Astrobiology in the Muslim World. Bloomsbury Publishing. pp. 68–69. ISBN978-0-7556-0129-5.
^Randles, Jenny (1995). "1908: The Siberian Spacefall". UFO Retrievals: The Recovery of Alien Spacecraft. London: Blandford. p. 21. ISBN978-0-7137-2493-6. Post-World War 2, aerial photos of the destruction of Hiroshima and Nagasaki were compared with photos of the flattened Siberian taiga. They were stunningly similar. It took less than six months for someone to draw the obvious conclusion. A. Kasantsev, a science-fiction author, published a short story in January 1946 in which he offered serious speculation that an alien spacecraft powered by nuclear motors had blown up above Tunguska.
Bloom, Steven D. (2016). "Asteroids, Comets, and Impacts". The Physics and Astronomy of Science Fiction: Understanding Interstellar Travel, Teleportation, Time Travel, Alien Life and Other Genre Fixtures. McFarland. pp. 57–60. ISBN978-0-7864-7053-2.