Nucleosynthesis began three minutes after the Big Bang. For the next 17 minutes, all was fusion. At 20 minutes after the Big Bang, that fusion ceased, but because it was still so hot that most ...

When our universe was less than 20 minutes old, those particles began to assemble themselves into the first protons and neutrons during what we call Big Bang Nucleosynthesis. Big Bang ...

These four facts: the Hubble expansion of the Universe, the existence and properties of the CMB, the abundance of the light elements from Big Bang nucleosynthesis, and the formation and growth of ...

The Big Bang may have not been alone. The appearance of all the particles and radiation in the universe may have been joined by another Big Bang that flooded our universe with dark matter particles.

During the first three minutes of the universe, the light elements were born during a process known as Big Bang nucleosynthesis. Temperatures cooled from 100 nonillion (10 32) Kelvin to 1 billion ...

This plasma has a temperature and density that is pretty much what cosmologists think was present during Big Bang nucleosynthesis. Thus, tritium and helium ions can fuse to form 6 Li at rates that ...

These were formed during the era of Big Bang Nucleosynthesis (BBN) in the first few minutes after the Big Bang. Their abundances show that the universe was really hot and really dense in the past ...