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. The "Big Bang" event most likely happened 13.8 billion years ago; see age of the Universe.

Graphical timeline of the Big Bang Graphical timeline of the Stelliferous Era Pre-Nectarian Nectarian Lower Imbrian Upper Imbrian Eratosthenian Copernican period Lunar geologic timescale Hadean Eoarchean Paleoarchean Mesoarchean Neoarchean Paleoproterozoic Mesoproterozoic Neoproterozoic Paleozoic Mesozoic Cenozoic Era (geology) Hadean Archean Proterozoic Phanerozoic Eon (geology) Geological time scale Life on Mars Precambrian Solar shade Origin of life White dwarf Asymptotic giant branch Horizontal branch Red giant Main sequence Protostar Elliptical galaxy Andromeda-Milky Way collision Neptune Black dwarf Planetary nebula Helium flash Mammals Multicellular life Acasta Gneiss Earth Geological time scale Supernova Population I stars Galaxy formation and evolution Oldest star Reionization Big Bang

See also

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