Category:Cosmic chronology

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NASA cosmic chronology diagram tracing the 13.7 billion year history of the Universe from the Big Bang to the formation of stars, galaxies, and planets.

Chronology is the study of time, or a record of events in the order of their occurrence (timeline). As a scientific endeavor, cosmic chronology is an attempt to determine the temporal sequence of events that occurred during the formation of the cosmos. Cosmic chronologists determine the dates of events (such as the Big Bang, the formation of stars, galaxies and planets), then arranges them in the order in which they occurred.