urban75 forums
Bit of a stand out intro:
Let's start with the general framework. 13.77 billion years ago, our universe was incredibly hot (a temperature of over a quadrillion degrees) and incredibly small (about the size of a peach).
www.space.com
Let's start with the general framework. 13.77 billion years ago, our universe was incredibly hot (a temperature of over a quadrillion degrees) and incredibly small (about the size of a peach).
The 1st few seconds of the Big Bang: What we know and what we don't
The infant universe was a busy place.