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Garis Masa Alam Semesta 4.8

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Tarikh Hari dalam seminggu Masa Peristiwa
1/01/28 Saturday The Big Bang. Beginning of the space and time.
4/01/28 Tuesday Methuselah star. Oldest known star in the universe.
6/01/28 - 24/01/28 Thursday - Monday Reionization era. Early stars start ionizing interstellar gas.
8/01/28 Saturday First black holes form
14/01/28 Friday Mass star formation. Universe starts to heat once again.
16/01/28 Sunday First galaxies form
17/01/28 Monday GRB 090423. Oldest gamma ray burst ever observed.
22/01/28 Saturday Hubble ultra deep field
26/01/28 Wednesday Quasar CFHQS J2329-0301. Oldest known quasar.
30/01/28 Sunday PST B1620-26. Oldest known exoplanet.
1/02/28 Tuesday Milky Way forms
15/02/28 Tuesday GRB 140419A supernova. Second oldest gamma ray burst.
25/02/28 Friday BX442 galaxy. Oldest known spiral galaxy.
1/03/28 Wednesday Kapteyn b. Oldest known exoplanet lying within the habitable zone.
4/03/28 Saturday Milky Way's cosmic halo forms
15/03/28 Wednesday Star formation rate peaks. Universe starts to cool Temperature averages around 13000 K.
28/03/28 Tuesday Oldest population I stars. First stars abundant in metals.
31/03/28 Friday Universe becomes habitable. First life-friendly star systems emerge.
13/04/28 Thursday JKCS 041. Oldest galactic cluster.
18/04/28 Tuesday Universe reaches 1/3 of its present diameter
21/04/28 Friday Milky Way star formation rate stabilizes
28/04/28 Friday Barnard's star forms. Oldest close solar neighbor.
7/05/28 Sunday Oldest known evidence for dark energy
12/05/28 Friday Milky Way's thin disk starts to form
20/05/28 Saturday Lalande 21185
23/05/28 Tuesday Lacaille 9352
2/06/28 Friday Milky Way star formation rate begins to decline
8/06/28 Thursday Mizar forms
16/06/28 Friday GRB 080319B. Most powerful gamma ray burst ever observed by humans.
16/06/28 Friday Arcturus forms. 4th brightest star in the night sky.
26/06/28 Monday Universe cools below 5 K
29/06/28 Thursday Growth of large galaxies slows
2/07/28 Sunday 1/2 the age of the Universe
4/07/28 Tuesday Alpha Centauri forms. Closest star system to the Sun.
7/07/28 Friday Alnitak forms. Left star of the Orion's Belt.
12/07/28 Wednesday Milky Way starts spiralizing
15/07/28 Saturday Age of an average earth-like planet
20/07/28 Thursday 61 Cygni forms
25/07/28 Tuesday Dark energy overtakes gravity. Universe's expansion rate starts to accelerate.
31/07/28 Monday Tau Ceti forms
8/08/28 Tuesday Solar nebula starts collapsing
8/08/28 Tuesday Milky way becomes a spiral galaxy
16/08/28 Wednesday Gliese 570 forms
25/08/28 Friday Proxima Centauri forms. Closest star to the Sun.
29/08/28 Tuesday SN 2005ap supernova. Brightest supernova ever observed.
1/09/28 Friday The Sun forms
2/09/28 Saturday Proto-earth forms. Planets, asteroids and comets form from the Sun's protoplanetary disk.
2/09/28 Saturday Formation of the Moon. Theia impacts Earth, the Moon forms from the coalesced debris.
6/09/28 Wednesday Oceans form on Earth. Asteroids bring water to Earth.
6/09/28 Wednesday First known minerals. Zircons form at Jack Hills, Australia.
10/09/28 Sunday Mintaka forms. Right star of the Orion's Belt.
11/09/28 - 19/09/28 Monday - Tuesday Life emerges on Earth
13/09/28 - 22/09/28 Wednesday - Friday Late Heavy Bombardment
14/09/28 Thursday Earliest known rock. (Aggregate of minerals).
16/09/28 Saturday Greenstone rock belt
22/09/28 Friday Oldest banded iron formation
27/09/28 Wednesday Vaalbara supercontinent emerges
30/09/28 Saturday Last universal ancestor. Split between bacteria and archaea.
30/09/28 Saturday Cyanobacteria fossils. Warrawoona, oldest fossil evidence of life on Earth.
5/10/28 Thursday Compressional tectonics
6/10/28 Friday Barberton event. One of the largest impacts ever, left a 300 mi / 480 km crater.
8/10/28 Sunday Ur supercontinent forms
8/10/28 Sunday Anoxygenic photosynthesis developed by bacteria
10/10/28 Tuesday First land bacteria
13/10/28 Friday Cyanobacteria develop true photosynthesis. Life begins to produce oxygen.
16/10/28 Monday Zeta Reticuli forms
16/10/28 Monday Kenorland supercontinent emerges
16/10/28 Monday Tides decline below 1000 ft / 300 m
18/10/28 Wednesday Vaalbara supercontinent breaks up
21/10/28 Saturday Major komatiite eruption
21/10/28 Saturday First eukaryotes emerge. Early estimate.
24/10/28 Tuesday Oldest known giant carbonate platform
25/10/28 Wednesday Zeta Puppis forms
26/10/28 Thursday Great Oxygenation event. Bacterially produced oxygen starts to accumulate in the atmosphere.
26/10/28 Thursday Movement of the tectonic plates commences
29/10/28 Sunday Suavjarvi impact event left oldest still recognizable crater
29/10/28 - 4/11/28 Sunday - Saturday Huronian glaciation. First snowball earth period.
1/11/28 Wednesday Continental red beds form
3/11/28 Friday Atmospheric oxygen level surpasses one percent
3/11/28 Friday Ozone layer forms
6/11/28 Monday Earliest known eukaryote fossils (acritarchs)
6/11/28 Monday Earliest multicellular life. Francevillian Group Fossil.
8/11/28 Wednesday Vredefort impact event. One of the largest impacts ever left a 190 mi/ 300 km crater.
11/11/28 Saturday Atmospheric oxygen level surpasses 15 percent
11/11/28 Saturday Natural nuclear reactor forms in Oklo, Gabon
12/11/28 Sunday Sudbury impact, event left a 160 mi / 260 km crater
14/11/28 Tuesday Supercontinent Columbia forms
15/11/28 Wednesday Vishnu Basement Rocks. Oldest rocks in the Grand Canyon.
16/11/28 Thursday Oldest sand dune ergs
19/11/28 Sunday Mitochondria assimilate into eukaryotic cells
22/11/28 Wednesday Supercontinent Columbia breaks up
23/11/28 Thursday Geologic platform covers expand
24/11/28 Friday Population of stromatolites rapidly rises
25/11/28 Saturday Procyon forms. Brightest star in Canis Minor.
27/11/28 Monday Greenville orogeny starts
30/11/28 Thursday Supercontinent Rodinia forms
30/11/28 Thursday Bangiomorpha pubescens. First sexually reproducing organism.
1/12/28 Friday Population explosion of eukaryotes
2/12/28 Saturday Earliest flagellate protists
9/12/28 Saturday Population of stromatolites starts to decline
10/12/28 Sunday Protista population explodes
11/12/28 Monday Kaigas glaciation. Snowball earth period.
12/12/28 Tuesday Supercontinent Rodinia breaks apart
12/12/28 - 14/12/28 Tuesday - Thursday Sturtian glaciation. Snowball earth period.
14/12/28 Thursday Marinoan glaciation. Snowball earth period.
16/12/28 Saturday Fossilized worm impressions in China
16/12/28 Saturday Avalon explosion. Ediacaran fauna emerges.
17/12/28 Sunday Cambrian explosion. Exponential diversification of life, most major animal phyla appear.
18/12/28 Monday First trilobites
20/12/28 Wednesday 1:33 PG Plants and arthropods colonize the land
20/12/28 Wednesday 4:44 PG Ordovician extinction event. 60% of all species go extinct.
20/12/28 Wednesday 8:39 PTG First air-breathing animals
21/12/28 Thursday 12:34 PTG First tetrapods
21/12/28 Thursday 10:07 PTG First tree-like plants
22/12/28 Friday 4:29 PG Late Devonian extinction. 70% of all species go extinct.
23/12/28 Saturday 5:56 PG First amniotes
23/12/28 Saturday 12:18 PTG First reptiles
23/12/28 Saturday 9:51 PTG Atmospheric oxygen level peaks at 35%. Arthropods grow into unprecedented sizes.
24/12/28 Sunday 1:02 PG Pangaea forms. Last supercontinent.
25/12/28 Monday 8:13 PG Permian extinction event. Largest extinction event in history, 90-96% of all species go extinct.
25/12/28 Monday 8:52 PG Sirius forms . Brightest star in the night sky.
25/12/28 Monday 8:57 PTG First dinosaurs
26/12/28 Tuesday 12:46 PG First mammals
26/12/28 Tuesday 4:03 PTG Triassic extinction event. 75% of all species go extinct.
26/12/28 Tuesday 11:03 PTG First giant sauropods
27/12/28 Wednesday 5:25 PG Pangaea splits into Laurasia and Gondwana
27/12/28 Wednesday 7:58 PG First stegosaurs
27/12/28 Wednesday 9:20 PTG First birds
28/12/28 Thursday 3:42 PG Madagascar splits from Africa
28/12/28 Thursday 1:15 PTG First flowering plants
28/12/28 Thursday 1:15 PTG Laurasia and Gondwana begin to drift apart
29/12/28 Friday 4:31 PG Spinosaurus evolves. Largest of all carnivorous dinosaurs.
29/12/28 Friday 8:20 PG First bees
29/12/28 Friday 2:42 PTG Indian subcontinent splits from Gondwana
29/12/28 Friday 9:04 PTG Australia splits from Antarctica
30/12/28 Saturday 4:42 PG Tyrannosaurus rex evolves
30/12/28 Saturday 5:59 PG Cretaceous extinction event. 75% of all species vanish.
30/12/28 Saturday 9:48 PG First primates evolve
30/12/28 Saturday 12:59 PTG First modern birds
30/12/28 Saturday 4:10 PTG Indian subcontinent collides with Asia. Tiber and Himalayas start to rise.
30/12/28 Saturday 6:05 PTG Whales return to the water
30/12/28 Saturday 10:32 PTG Antarctic ice cap begins to grow
31/12/28 Sunday 1:43 PG Grasslands become widespread
31/12/28 Sunday 4:54 PG South America separates from Antarctica
31/12/28 Sunday 7:27 PG First elephants. Eritreum melakeghebrekristosi.
31/12/28 Sunday 12:32 PTG Divergence of great apes and lesser apes
31/12/28 Sunday 2:27 PTG First bovids
31/12/28 Sunday 4:59 PTG First large horses
31/12/28 Sunday 6:54 PTG Rigel forms. Brightest star in Orion.
31/12/28 Sunday 7:13 PTG Betelgeuse forms. Second brightest star in Orion.
31/12/28 Sunday 8:10 PTG Last common ancestor humans and chimpanzees
31/12/28 Sunday 8:12 PTG - 8:36 PTG Messinian salinity crisis. Strait of Gibraltar closes tight, Mediterranean Sea dries out.
31/12/28 Sunday 9:27 PTG Australopithecus evolves
31/12/28 Sunday 10:05 PTG Great American Interchange. Isthmus of Panama rises, North and South America join, extensive fauna exchange follows.
31/12/28 Sunday 10:24 PTG Current ice age begins
31/12/28 Sunday 10:35 PTG First members of the genus Homo appear
31/12/28 Sunday 11:02 PTG First controlled use of fire by Homo erectus
31/12/28 Sunday 11:30 PTG Last reversal of the Earth's magnetic field
31/12/28 Sunday 11:35 PTG Yellowstone Caldera erupts
31/12/28 Sunday 11:40 PTG Earliest human engravings. Zig-zag patterns on shells in Java.
31/12/28 Sunday 11:48 PTG Earliest instances of burial
31/12/28 Sunday 11:50 PTG Neanderthals evolve
31/12/28 Sunday 11:52 PTG Anatomically modern humans appear in Africa
31/12/28 Sunday 11:56 PTG Humans begin migrating out of Africa
31/12/28 Sunday 11:57 PTG Toba supervolcanic eruption. Human population falls to 10,000.
31/12/28 Sunday 11:58 PTG 23:58:39 Neanderthals go extinct
31/12/28 Sunday 11:59 PTG 23:59:25 First domesticated dogs
31/12/28 Sunday 11:59 PTG 23:59:39 Beginning of agriculture
31/12/28 Sunday 11:59 PTG 23:59:46 Wheel invented
31/12/28 Sunday 11:59 PTG 23:59:48 Writing invented
31/12/28 Sunday 11:59 PTG 23:59:49 Great Pyramid
31/12/28 Sunday 11:59 PTG 23:59:52 Iron Age begins
31/12/28 Sunday 11:59 PTG 23:59:55 Julius Caesar
31/12/28 Sunday 11:59 PTG 23:59:58 Galileo Galilei
31/12/28 Sunday 11:59 PTG 23:59:59 Charles Darwin