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Universe Timeline 4.8

Compresses the history of the universe into a single year.
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Date Day of week Time Event
2026/08/25 Tuesday Proxima Centauri forms. Closest star to the Sun.
2026/08/29 Saturday SN 2005ap supernova. Brightest supernova ever observed.
2026/09/02 Wednesday The Sun forms
2026/09/02 Wednesday Proto-earth forms. Planets, asteroids and comets form from the Sun's protoplanetary disk.
2026/09/03 Thursday Formation of the Moon. Theia impacts Earth, the Moon forms from the coalesced debris.
2026/09/06 Sunday Oceans form on Earth. Asteroids bring water to Earth.
2026/09/06 Sunday First known minerals. Zircons form at Jack Hills, Australia.
2026/09/10 Thursday Mintaka forms. Right star of the Orion's Belt.
2026/09/11 - 2026/09/19 Friday - Saturday Life emerges on Earth
2026/09/14 - 2026/09/22 Monday - Tuesday Late Heavy Bombardment
2026/09/14 Monday Earliest known rock. (Aggregate of minerals).
2026/09/17 Thursday Greenstone rock belt
2026/09/22 Tuesday Oldest banded iron formation
2026/09/27 Sunday Vaalbara supercontinent emerges
2026/09/30 Wednesday Last universal ancestor. Split between bacteria and archaea.
2026/09/30 Wednesday Cyanobacteria fossils. Warrawoona, oldest fossil evidence of life on Earth.
2026/10/05 Monday Compressional tectonics
2026/10/06 Tuesday Barberton event. One of the largest impacts ever, left a 300 mi / 480 km crater.
2026/10/08 Thursday Ur supercontinent forms
2026/10/08 Thursday Anoxygenic photosynthesis developed by bacteria
2026/10/11 Sunday First land bacteria
2026/10/13 Tuesday Cyanobacteria develop true photosynthesis. Life begins to produce oxygen.
2026/10/16 Friday Zeta Reticuli forms
2026/10/16 Friday Kenorland supercontinent emerges
2026/10/16 Friday Tides decline below 1000 ft / 300 m
2026/10/18 Sunday Vaalbara supercontinent breaks up
2026/10/21 Wednesday Major komatiite eruption
2026/10/21 Wednesday First eukaryotes emerge. Early estimate.
2026/10/24 Saturday Oldest known giant carbonate platform
2026/10/25 Sunday Zeta Puppis forms
2026/10/26 Monday Great Oxygenation event. Bacterially produced oxygen starts to accumulate in the atmosphere.
2026/10/26 Monday Movement of the tectonic plates commences
2026/10/29 Thursday Suavjarvi impact event left oldest still recognizable crater
2026/10/29 - 2026/11/05 Thursday - Thursday Huronian glaciation. First snowball earth period.
2026/11/01 Sunday Continental red beds form
2026/11/03 Tuesday Atmospheric oxygen level surpasses one percent
2026/11/03 Tuesday Ozone layer forms
2026/11/06 Friday Earliest known eukaryote fossils (acritarchs)
2026/11/06 Friday Earliest multicellular life. Francevillian Group Fossil.
2026/11/08 Sunday Vredefort impact event. One of the largest impacts ever left a 190 mi/ 300 km crater.
2026/11/11 Wednesday Atmospheric oxygen level surpasses 15 percent
2026/11/11 Wednesday Natural nuclear reactor forms in Oklo, Gabon
2026/11/13 Friday Sudbury impact, event left a 160 mi / 260 km crater
2026/11/14 Saturday Supercontinent Columbia forms
2026/11/15 Sunday Vishnu Basement Rocks. Oldest rocks in the Grand Canyon.
2026/11/17 Tuesday Oldest sand dune ergs
2026/11/19 Thursday Mitochondria assimilate into eukaryotic cells
2026/11/22 Sunday Supercontinent Columbia breaks up
2026/11/23 Monday Geologic platform covers expand
2026/11/24 Tuesday Population of stromatolites rapidly rises
2026/11/25 Wednesday Procyon forms. Brightest star in Canis Minor.
2026/11/27 Friday Greenville orogeny starts
2026/11/30 Monday Supercontinent Rodinia forms
2026/11/30 Monday Bangiomorpha pubescens. First sexually reproducing organism.
2026/12/01 Tuesday Population explosion of eukaryotes
2026/12/02 Wednesday Earliest flagellate protists
2026/12/09 Wednesday Population of stromatolites starts to decline
2026/12/10 Thursday Protista population explodes
2026/12/11 Friday Kaigas glaciation. Snowball earth period.
2026/12/12 Saturday Supercontinent Rodinia breaks apart
2026/12/12 - 2026/12/14 Saturday - Monday Sturtian glaciation. Snowball earth period.
2026/12/14 Monday Marinoan glaciation. Snowball earth period.
2026/12/16 Wednesday Fossilized worm impressions in China
2026/12/16 Wednesday Avalon explosion. Ediacaran fauna emerges.
2026/12/17 Thursday Cambrian explosion. Exponential diversification of life, most major animal phyla appear.
2026/12/18 Friday First trilobites
2026/12/20 Sunday 02:20 Plants and arthropods colonize the land
2026/12/20 Sunday 05:31 Ordovician extinction event. 60% of all species go extinct.
2026/12/20 Sunday 21:23 First air-breathing animals
2026/12/21 Monday 13:15 First tetrapods
2026/12/21 Monday 22:46 First tree-like plants
2026/12/22 Tuesday 05:07 Late Devonian extinction. 70% of all species go extinct.
2026/12/23 Wednesday 06:31 First amniotes
2026/12/23 Wednesday 12:52 First reptiles
2026/12/23 Wednesday 22:23 Atmospheric oxygen level peaks at 35%. Arthropods grow into unprecedented sizes.
2026/12/24 Thursday 01:33 Pangaea forms. Last supercontinent.
2026/12/25 Friday 08:40 Permian extinction event. Largest extinction event in history, 90-96% of all species go extinct.
2026/12/25 Friday 09:18 Sirius forms . Brightest star in the night sky.
2026/12/25 Friday 21:21 First dinosaurs
2026/12/26 Saturday 01:10 First mammals
2026/12/26 Saturday 16:24 Triassic extinction event. 75% of all species go extinct.
2026/12/26 Saturday 23:23 First giant sauropods
2026/12/27 Sunday 05:44 Pangaea splits into Laurasia and Gondwana
2026/12/27 Sunday 08:16 First stegosaurs
2026/12/27 Sunday 21:36 First birds
2026/12/28 Monday 03:57 Madagascar splits from Africa
2026/12/28 Monday 13:28 First flowering plants
2026/12/28 Monday 13:28 Laurasia and Gondwana begin to drift apart
2026/12/29 Tuesday 04:42 Spinosaurus evolves. Largest of all carnivorous dinosaurs.
2026/12/29 Tuesday 08:31 First bees
2026/12/29 Tuesday 14:52 Indian subcontinent splits from Gondwana
2026/12/29 Tuesday 21:13 Australia splits from Antarctica
2026/12/30 Wednesday 04:50 Tyrannosaurus rex evolves
2026/12/30 Wednesday 06:06 Cretaceous extinction event. 75% of all species vanish.
2026/12/30 Wednesday 09:54 First primates evolve
2026/12/30 Wednesday 13:05 First modern birds
2026/12/30 Wednesday 16:15 Indian subcontinent collides with Asia. Tiber and Himalayas start to rise.
2026/12/30 Wednesday 18:09 Whales return to the water
2026/12/30 Wednesday 22:36 Antarctic ice cap begins to grow
2026/12/31 Thursday 01:46 Grasslands become widespread
2026/12/31 Thursday 04:57 South America separates from Antarctica
2026/12/31 Thursday 07:29 First elephants. Eritreum melakeghebrekristosi.
2026/12/31 Thursday 12:34 Divergence of great apes and lesser apes
2026/12/31 Thursday 14:28 First bovids
2026/12/31 Thursday 17:01 First large horses
2026/12/31 Thursday 18:55 Rigel forms. Brightest star in Orion.
2026/12/31 Thursday 19:14 Betelgeuse forms. Second brightest star in Orion.
2026/12/31 Thursday 20:11 Last common ancestor humans and chimpanzees
2026/12/31 Thursday 20:13 - 20:36 Messinian salinity crisis. Strait of Gibraltar closes tight, Mediterranean Sea dries out.
2026/12/31 Thursday 21:27 Australopithecus evolves
2026/12/31 Thursday 22:05 Great American Interchange. Isthmus of Panama rises, North and South America join, extensive fauna exchange follows.
2026/12/31 Thursday 22:24 Current ice age begins
2026/12/31 Thursday 22:36 First members of the genus Homo appear
2026/12/31 Thursday 23:02 First controlled use of fire by Homo erectus
2026/12/31 Thursday 23:30 Last reversal of the Earth's magnetic field
2026/12/31 Thursday 23:35 Yellowstone Caldera erupts
2026/12/31 Thursday 23:40 Earliest human engravings. Zig-zag patterns on shells in Java.
2026/12/31 Thursday 23:48 Earliest instances of burial
2026/12/31 Thursday 23:50 Neanderthals evolve
2026/12/31 Thursday 23:52 Anatomically modern humans appear in Africa
2026/12/31 Thursday 23:56 Humans begin migrating out of Africa
2026/12/31 Thursday 23:57 Toba supervolcanic eruption. Human population falls to 10,000.
2026/12/31 Thursday 23:58 23:58:40 Neanderthals go extinct
2026/12/31 Thursday 23:59 23:59:25 First domesticated dogs
2026/12/31 Thursday 23:59 23:59:39 Beginning of agriculture
2026/12/31 Thursday 23:59 23:59:46 Wheel invented
2026/12/31 Thursday 23:59 23:59:48 Writing invented
2026/12/31 Thursday 23:59 23:59:49 Great Pyramid
2026/12/31 Thursday 23:59 23:59:52 Iron Age begins
2026/12/31 Thursday 23:59 23:59:55 Julius Caesar
2026/12/31 Thursday 23:59 23:59:58 Galileo Galilei
2026/12/31 Thursday 23:59 23:59:59 Charles Darwin
2027/01/01 Friday The Big Bang. Beginning of the space and time.
2027/01/04 Monday Methuselah star. Oldest known star in the universe.
2027/01/06 - 2027/01/24 Wednesday - Sunday Reionization era. Early stars start ionizing interstellar gas.
2027/01/08 Friday First black holes form
2027/01/14 Thursday Mass star formation. Universe starts to heat once again.
2027/01/16 Saturday First galaxies form
2027/01/17 Sunday GRB 090423. Oldest gamma ray burst ever observed.
2027/01/22 Friday Hubble ultra deep field
2027/01/26 Tuesday Quasar CFHQS J2329-0301. Oldest known quasar.
2027/01/30 Saturday PST B1620-26. Oldest known exoplanet.
2027/02/01 Monday Milky Way forms
2027/02/14 Sunday GRB 140419A supernova. Second oldest gamma ray burst.
2027/02/25 Thursday BX442 galaxy. Oldest known spiral galaxy.
2027/03/02 Tuesday Kapteyn b. Oldest known exoplanet lying within the habitable zone.
2027/03/05 Friday Milky Way's cosmic halo forms
2027/03/16 Tuesday Star formation rate peaks. Universe starts to cool Temperature averages around 13000 K.
2027/03/29 Monday Oldest population I stars. First stars abundant in metals.
2027/03/31 Wednesday Universe becomes habitable. First life-friendly star systems emerge.
2027/04/14 Wednesday JKCS 041. Oldest galactic cluster.
2027/04/19 Monday Universe reaches 1/3 of its present diameter
2027/04/22 Thursday Milky Way star formation rate stabilizes
2027/04/28 Wednesday Barnard's star forms. Oldest close solar neighbor.
2027/05/07 Friday Oldest known evidence for dark energy
2027/05/13 Thursday Milky Way's thin disk starts to form
2027/05/21 Friday Lalande 21185
2027/05/23 Sunday Lacaille 9352
2027/06/03 Thursday Milky Way star formation rate begins to decline
2027/06/08 Tuesday Mizar forms
2027/06/16 Wednesday GRB 080319B. Most powerful gamma ray burst ever observed by humans.
2027/06/16 Wednesday Arcturus forms. 4th brightest star in the night sky.
2027/06/27 Sunday Universe cools below 5 K
2027/06/29 Tuesday Growth of large galaxies slows
2027/07/02 Friday 1/2 the age of the Universe
2027/07/05 Monday Alpha Centauri forms. Closest star system to the Sun.
2027/07/07 Wednesday Alnitak forms. Left star of the Orion's Belt.
2027/07/13 Tuesday Milky Way starts spiralizing
2027/07/15 Thursday Age of an average earth-like planet
2027/07/21 Wednesday 61 Cygni forms
2027/07/26 Monday Dark energy overtakes gravity. Universe's expansion rate starts to accelerate.
2027/07/31 Saturday Tau Ceti forms
2027/08/08 Sunday Solar nebula starts collapsing
2027/08/08 Sunday Milky way becomes a spiral galaxy
2027/08/16 Monday Gliese 570 forms
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