-
Big Bang at 00:00:00
The universe begins with a cataclysm that generates space and time, as well as all the matter and energy the universe will ever hold. For an incomprehensibly small fraction of a second, the universe is an infinitely dense, hot fireball. -
Formation of Basic Elements at 00:00:000.000000218
Basic Elements were formed. These basic elements serve as the building blocks of other particles and the universe. These are Quarks, electrons and neutrinos. -
Radiation era at 00:00:3822
The Radiation Era was the era in which most of the engery in the universe was radiation in the form of light, X rays, radio waves and ultraviolet rays. -
Beginning of the Era of Matter Domination at 00:00:11:28:200
At this time, the densities of non-relativistic matter (atomic nuclei) and relativistic radiation (photons) are equal. -
Shaping of the Universe at 00:00:00
1 millionth of second after the Big Bang, the shaping of the universe occured. As the universe expanded, basic forces formed (gravity , forces holding together nuclei of atoms then weak forces) At 00:00:01 of the 1 Jan 2012, the universe is made of fundamental particles, such as: neutrinos electrons, photons etc. -
Period: to
Cosmological timespan in 1 year
-
Birth of Stars and Galaxies at 23:07:38
Pockets within the remenace of the primordial gas become compressed and inturn become more and more dense. These pockets become hot enough to trigger nuclear fusion reactions between hydrogen atoms, creating the very first clusters of stars. -
Birth of the Sun at 06:32:43
Formation of the Sun begins in a spiral arm of the Milky-Way. -
Earliest Life at 03:03:16
This event involves the cooling of the earth, establishing of an atmosphere and the evolvment of micro organisims in volcanic areas. -
Primitive Animals Appear at 00:19:25
Mostly flatworms, jellyfish and alge apear. By 570 million years before the present, large numbers of creatures with hard shells suddenly appear. -
Supernova 1987A Explodes at 00:00:0000.765
This was the explosion of a star in the Large Magellanic Cloud; which is a small irregular galaxy. It had around 20 Solar-masses. -
Discovery of Pulsars at 11:59:59
Pulsars were discovered by accident in 1967 while Jocelyn Bell and Antony Hewish were looking for twinkling sources of radio radiation. The explanation for the radio pulses proved the existence of neutron stars, incredibly dense remains of massive collapsed stars. -
Light from Supernova 1987A Reaches Earth at 00:00:0000.784
The light from this supernova reaches earth, 170,000 years after is parent star exploded.
