Graphical timeline of the universe

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.

Graphical timeline of the Big BangGraphical timeline of the Stelliferous EraPre-NectarianNectarianLower ImbrianUpper ImbrianEratosthenianCopernican periodLunar geologic timescaleHadeanEoarcheanPaleoarcheanMesoarcheanNeoarcheanPaleoproterozoicMesoproterozoicNeoproterozoicPaleozoicMesozoicCenozoicEra (geology)HadeanArcheanProterozoicPhanerozoicEon (geology)Geological time scaleLife on MarsPrecambrianSolar shadeOrigin of lifeWhite dwarfAsymptotic giant branchHorizontal branchRed giantMain sequenceProtostarElliptical galaxyAndromeda-Milky Way collisionNeptuneBlack dwarfPlanetary nebulaHelium flashMammalsMulticellular lifeAcasta GneissEarthGeological time scaleSupernovaPopulation I starsGalaxy formation and evolutionList of oldest starsReionizationBig Bang

See also

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