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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
16/8/26 Sunday Gliese 570 forms
25/8/26 Tuesday Proxima Centauri forms. Closest star to the Sun.
29/8/26 Saturday SN 2005ap supernova. Brightest supernova ever observed.
2/9/26 Wednesday The Sun forms
2/9/26 Wednesday Proto-earth forms. Planets, asteroids and comets form from the Sun's protoplanetary disk.
3/9/26 Thursday Formation of the Moon. Theia impacts Earth, the Moon forms from the coalesced debris.
6/9/26 Sunday Oceans form on Earth. Asteroids bring water to Earth.
6/9/26 Sunday First known minerals. Zircons form at Jack Hills, Australia.
10/9/26 Thursday Mintaka forms. Right star of the Orion's Belt.
11/9/26 - 19/9/26 Friday - Saturday Life emerges on Earth
14/9/26 - 22/9/26 Monday - Tuesday Late Heavy Bombardment
14/9/26 Monday Earliest known rock. (Aggregate of minerals).
17/9/26 Thursday Greenstone rock belt
22/9/26 Tuesday Oldest banded iron formation
27/9/26 Sunday Vaalbara supercontinent emerges
30/9/26 Wednesday Last universal ancestor. Split between bacteria and archaea.
30/9/26 Wednesday Cyanobacteria fossils. Warrawoona, oldest fossil evidence of life on Earth.
5/10/26 Monday Compressional tectonics
6/10/26 Tuesday Barberton event. One of the largest impacts ever, left a 300 mi / 480 km crater.
8/10/26 Thursday Ur supercontinent forms
8/10/26 Thursday Anoxygenic photosynthesis developed by bacteria
11/10/26 Sunday First land bacteria
13/10/26 Tuesday Cyanobacteria develop true photosynthesis. Life begins to produce oxygen.
16/10/26 Friday Zeta Reticuli forms
16/10/26 Friday Kenorland supercontinent emerges
16/10/26 Friday Tides decline below 1000 ft / 300 m
18/10/26 Sunday Vaalbara supercontinent breaks up
21/10/26 Wednesday Major komatiite eruption
21/10/26 Wednesday First eukaryotes emerge. Early estimate.
24/10/26 Saturday Oldest known giant carbonate platform
25/10/26 Sunday Zeta Puppis forms
26/10/26 Monday Great Oxygenation event. Bacterially produced oxygen starts to accumulate in the atmosphere.
26/10/26 Monday Movement of the tectonic plates commences
29/10/26 Thursday Suavjarvi impact event left oldest still recognizable crater
29/10/26 - 5/11/26 Thursday - Thursday Huronian glaciation. First snowball earth period.
1/11/26 Sunday Continental red beds form
3/11/26 Tuesday Atmospheric oxygen level surpasses one percent
3/11/26 Tuesday Ozone layer forms
6/11/26 Friday Earliest known eukaryote fossils (acritarchs)
6/11/26 Friday Earliest multicellular life. Francevillian Group Fossil.
8/11/26 Sunday Vredefort impact event. One of the largest impacts ever left a 190 mi/ 300 km crater.
11/11/26 Wednesday Atmospheric oxygen level surpasses 15 percent
11/11/26 Wednesday Natural nuclear reactor forms in Oklo, Gabon
13/11/26 Friday Sudbury impact, event left a 160 mi / 260 km crater
14/11/26 Saturday Supercontinent Columbia forms
15/11/26 Sunday Vishnu Basement Rocks. Oldest rocks in the Grand Canyon.
17/11/26 Tuesday Oldest sand dune ergs
19/11/26 Thursday Mitochondria assimilate into eukaryotic cells
22/11/26 Sunday Supercontinent Columbia breaks up
23/11/26 Monday Geologic platform covers expand
24/11/26 Tuesday Population of stromatolites rapidly rises
25/11/26 Wednesday Procyon forms. Brightest star in Canis Minor.
27/11/26 Friday Greenville orogeny starts
30/11/26 Monday Supercontinent Rodinia forms
30/11/26 Monday Bangiomorpha pubescens. First sexually reproducing organism.
1/12/26 Tuesday Population explosion of eukaryotes
2/12/26 Wednesday Earliest flagellate protists
9/12/26 Wednesday Population of stromatolites starts to decline
10/12/26 Thursday Protista population explodes
11/12/26 Friday Kaigas glaciation. Snowball earth period.
12/12/26 Saturday Supercontinent Rodinia breaks apart
12/12/26 - 14/12/26 Saturday - Monday Sturtian glaciation. Snowball earth period.
14/12/26 Monday Marinoan glaciation. Snowball earth period.
16/12/26 Wednesday Fossilized worm impressions in China
16/12/26 Wednesday Avalon explosion. Ediacaran fauna emerges.
17/12/26 Thursday Cambrian explosion. Exponential diversification of life, most major animal phyla appear.
18/12/26 Friday First trilobites
20/12/26 Sunday 2:20 am Plants and arthropods colonize the land
20/12/26 Sunday 5:31 am Ordovician extinction event. 60% of all species go extinct.
20/12/26 Sunday 9:23 pm First air-breathing animals
21/12/26 Monday 1:15 pm First tetrapods
21/12/26 Monday 10:46 pm First tree-like plants
22/12/26 Tuesday 5:07 am Late Devonian extinction. 70% of all species go extinct.
23/12/26 Wednesday 6:31 am First amniotes
23/12/26 Wednesday 12:52 pm First reptiles
23/12/26 Wednesday 10:23 pm Atmospheric oxygen level peaks at 35%. Arthropods grow into unprecedented sizes.
24/12/26 Thursday 1:33 am Pangaea forms. Last supercontinent.
25/12/26 Friday 8:40 am Permian extinction event. Largest extinction event in history, 90-96% of all species go extinct.
25/12/26 Friday 9:18 am Sirius forms . Brightest star in the night sky.
25/12/26 Friday 9:21 pm First dinosaurs
26/12/26 Saturday 1:10 am First mammals
26/12/26 Saturday 4:24 pm Triassic extinction event. 75% of all species go extinct.
26/12/26 Saturday 11:23 pm First giant sauropods
27/12/26 Sunday 5:44 am Pangaea splits into Laurasia and Gondwana
27/12/26 Sunday 8:16 am First stegosaurs
27/12/26 Sunday 9:36 pm First birds
28/12/26 Monday 3:57 am Madagascar splits from Africa
28/12/26 Monday 1:28 pm First flowering plants
28/12/26 Monday 1:28 pm Laurasia and Gondwana begin to drift apart
29/12/26 Tuesday 4:42 am Spinosaurus evolves. Largest of all carnivorous dinosaurs.
29/12/26 Tuesday 8:31 am First bees
29/12/26 Tuesday 2:52 pm Indian subcontinent splits from Gondwana
29/12/26 Tuesday 9:13 pm Australia splits from Antarctica
30/12/26 Wednesday 4:50 am Tyrannosaurus rex evolves
30/12/26 Wednesday 6:06 am Cretaceous extinction event. 75% of all species vanish.
30/12/26 Wednesday 9:54 am First primates evolve
30/12/26 Wednesday 1:05 pm First modern birds
30/12/26 Wednesday 4:15 pm Indian subcontinent collides with Asia. Tiber and Himalayas start to rise.
30/12/26 Wednesday 6:09 pm Whales return to the water
30/12/26 Wednesday 10:36 pm Antarctic ice cap begins to grow
31/12/26 Thursday 1:46 am Grasslands become widespread
31/12/26 Thursday 4:57 am South America separates from Antarctica
31/12/26 Thursday 7:29 am First elephants. Eritreum melakeghebrekristosi.
31/12/26 Thursday 12:34 pm Divergence of great apes and lesser apes
31/12/26 Thursday 2:28 pm First bovids
31/12/26 Thursday 5:01 pm First large horses
31/12/26 Thursday 6:55 pm Rigel forms. Brightest star in Orion.
31/12/26 Thursday 7:14 pm Betelgeuse forms. Second brightest star in Orion.
31/12/26 Thursday 8:11 pm Last common ancestor humans and chimpanzees
31/12/26 Thursday 8:13 pm - 8:36 pm Messinian salinity crisis. Strait of Gibraltar closes tight, Mediterranean Sea dries out.
31/12/26 Thursday 9:27 pm Australopithecus evolves
31/12/26 Thursday 10:05 pm Great American Interchange. Isthmus of Panama rises, North and South America join, extensive fauna exchange follows.
31/12/26 Thursday 10:24 pm Current ice age begins
31/12/26 Thursday 10:36 pm First members of the genus Homo appear
31/12/26 Thursday 11:02 pm First controlled use of fire by Homo erectus
31/12/26 Thursday 11:30 pm Last reversal of the Earth's magnetic field
31/12/26 Thursday 11:35 pm Yellowstone Caldera erupts
31/12/26 Thursday 11:40 pm Earliest human engravings. Zig-zag patterns on shells in Java.
31/12/26 Thursday 11:48 pm Earliest instances of burial
31/12/26 Thursday 11:50 pm Neanderthals evolve
31/12/26 Thursday 11:52 pm Anatomically modern humans appear in Africa
31/12/26 Thursday 11:56 pm Humans begin migrating out of Africa
31/12/26 Thursday 11:57 pm Toba supervolcanic eruption. Human population falls to 10,000.
31/12/26 Thursday 11:58 pm 23:58:40 Neanderthals go extinct
31/12/26 Thursday 11:59 pm 23:59:25 First domesticated dogs
31/12/26 Thursday 11:59 pm 23:59:39 Beginning of agriculture
31/12/26 Thursday 11:59 pm 23:59:46 Wheel invented
31/12/26 Thursday 11:59 pm 23:59:48 Writing invented
31/12/26 Thursday 11:59 pm 23:59:49 Great Pyramid
31/12/26 Thursday 11:59 pm 23:59:52 Iron Age begins
31/12/26 Thursday 11:59 pm 23:59:55 Julius Caesar
31/12/26 Thursday 11:59 pm 23:59:58 Galileo Galilei
31/12/26 Thursday 11:59 pm 23:59:59 Charles Darwin
1/1/27 Friday The Big Bang. Beginning of the space and time.
4/1/27 Monday Methuselah star. Oldest known star in the universe.
6/1/27 - 24/1/27 Wednesday - Sunday Reionization era. Early stars start ionizing interstellar gas.
8/1/27 Friday First black holes form
14/1/27 Thursday Mass star formation. Universe starts to heat once again.
16/1/27 Saturday First galaxies form
17/1/27 Sunday GRB 090423. Oldest gamma ray burst ever observed.
22/1/27 Friday Hubble ultra deep field
26/1/27 Tuesday Quasar CFHQS J2329-0301. Oldest known quasar.
30/1/27 Saturday PST B1620-26. Oldest known exoplanet.
1/2/27 Monday Milky Way forms
14/2/27 Sunday GRB 140419A supernova. Second oldest gamma ray burst.
25/2/27 Thursday BX442 galaxy. Oldest known spiral galaxy.
2/3/27 Tuesday Kapteyn b. Oldest known exoplanet lying within the habitable zone.
5/3/27 Friday Milky Way's cosmic halo forms
16/3/27 Tuesday Star formation rate peaks. Universe starts to cool Temperature averages around 13000 K.
29/3/27 Monday Oldest population I stars. First stars abundant in metals.
31/3/27 Wednesday Universe becomes habitable. First life-friendly star systems emerge.
14/4/27 Wednesday JKCS 041. Oldest galactic cluster.
19/4/27 Monday Universe reaches 1/3 of its present diameter
22/4/27 Thursday Milky Way star formation rate stabilizes
28/4/27 Wednesday Barnard's star forms. Oldest close solar neighbor.
7/5/27 Friday Oldest known evidence for dark energy
13/5/27 Thursday Milky Way's thin disk starts to form
21/5/27 Friday Lalande 21185
23/5/27 Sunday Lacaille 9352
3/6/27 Thursday Milky Way star formation rate begins to decline
8/6/27 Tuesday Mizar forms
16/6/27 Wednesday GRB 080319B. Most powerful gamma ray burst ever observed by humans.
16/6/27 Wednesday Arcturus forms. 4th brightest star in the night sky.
27/6/27 Sunday Universe cools below 5 K
29/6/27 Tuesday Growth of large galaxies slows
2/7/27 Friday 1/2 the age of the Universe
5/7/27 Monday Alpha Centauri forms. Closest star system to the Sun.
7/7/27 Wednesday Alnitak forms. Left star of the Orion's Belt.
13/7/27 Tuesday Milky Way starts spiralizing
15/7/27 Thursday Age of an average earth-like planet
21/7/27 Wednesday 61 Cygni forms
26/7/27 Monday Dark energy overtakes gravity. Universe's expansion rate starts to accelerate.
31/7/27 Saturday Tau Ceti forms
8/8/27 Sunday Solar nebula starts collapsing
8/8/27 Sunday Milky way becomes a spiral galaxy
16/8/27 Monday Gliese 570 forms
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