Graphical timeline of the universe

Historical timeline

Main article: Timeline of the early universe

It has been suggested that this article be merged into Graphical timeline from Big Bang to Heat Death. (Discuss) Proposed since February 2024.

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This more-than-20-billion-year timeline of our universe shows the best estimates of major events from the universe's beginning to anticipated future events. Zero on the scale is the present day. A large step on the scale is one billion years; a small step, one hundred million years. The past is denoted by a minus sign: e.g., the oldest rock on Earth was formed about four billion years ago and this is marked at -4e+09 years, where 4e+09 represents 4 times 10 to the power of 9. The "Big Bang" event most likely happened 13.8 billion years ago; see age of the universe.

## Timeline

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## See also

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* Cosmic Calendar (age of the universe scaled to a single year)
* Formation and evolution of the Solar System
* Graphical timeline from Big Bang to Heat Death
* Graphical timeline of the Big Bang
* Graphical timeline of the Stelliferous Era
* Timeline of the early universe

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* t
* e

Timeline of the Big Bang

Chronology of the universe|

* Big Bang
* Planck epoch
* Grand unification epoch
* Electroweak epoch (Inflationary epoch, Reheating, Baryogenesis)
* Quark epoch
* Hadron epoch
* Lepton epoch
* Photon epoch (Big Bang nucleosynthesis, Matter domination, Recombination)
* Dark ages
* Habitable epoch
* Reionization

Fate of the universe|

* Heat death of the universe
* Big Rip
* Big Crunch
* Big Bounce
* Big Slurp

* Graphical timeline of the Big Bang

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