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 ...

The process of light element formation in the early universe is called “Big Bang nucleosynthesis” Physics does not currently have a single answer for that question. You could research the ...

One theory is that dark matter resides in a “dark mirror” universe that failed to form atoms during the nucleosynthesis of ...