31 magg 130073523 anni - Star and Galaxy Formation, 300 - 500 million years onwards
Descrizione:
Gravity amplifies slight irregularities in the density of the primordial gas and pockets of gas become more and more dense, even as the universe continues to expand rapidly. These small, dense clouds of cosmic gas start to collapse under their own gravity, becoming hot enough to trigger nuclear fusion reactions between hydrogen atoms, creating the very first stars.
Aggiunto al nastro di tempo:
Data:
31 magg 130073523 anni
Adesso
~ 5883516 years and 0 months later