Universe Timeline

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