EARLY COSMOSSOLAR SYSTEMEARTHWHITE DWARF10 Ga0+10 Ga+20 GaNOW
13.8 GaBig BangFirst moments · 5 events ›~13 GaMilky Way begins assembling~10.5 Ga"Cosmic noon": peak star formation4.54 GaEarth forms2.4–2.1 GaGreat Oxidation Event: oxygen enters the atmosphere538.8 MaCambrian explosion~300 kaEarliest Homo sapiens (Jebel Irhoud)+4–10 GaMilky Way–Andromeda merger+5 GaSun begins to swell into a red giant+7.6 GaRed giant Sun engulfs Mercury, Venus and probably EarthBeyond the scale
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