Cosmology


The calendar of our universe according to our most recent insights about its evolution.

We might celebrate the Stelliferous Era of our universe.

Let us scale down the cosmological calendar to a human time scale.
When the 100 trillion years at the end of the Stelliferous Era is scaled down to 100 years then our universe is just about 5 days old. There is still an abundance of hydrogen to fuel stars and to have them born, to have them marvel our minds and to let them act as a cradle of all the wonderful chemical elements to which we also owe our physical existence.

At the end of the Stelliferous Era virtually all hydrogen has been depleted, the bright main sequence stars are gone. Remnants of stars like white dwarfs, neutron stars and black holes are left. Star like objects like brown dwarfs do contain hydrogen, but they are not massive enough to start and sustain fusion of hydrogen atoms in their core. Together with the white dwarfs they appear as extremely faint stars. The universe will gradually turn black.

Planck Epoch
Grand Unification Epoch
Inflationary Epoch
Electroweak Epoch
Quark Epoch
Hadron Epoch
Lepton Epoch
Photon Epoch
Dark Ages
Star and Galaxy Formation


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