Physicists agree that an awful lot went on in the first few seconds after the Big Bang, a lot of it in incomprehensibly tiny ...

Cosmologists have traced the Big Bang’s earliest moments with great care, from the explosive inflation that set spacetime in motion to the period of newborn atomic nuclei known as primordial ...

In the blink of an eye after the Big Bang, the universe could have birthed strange new stars and black holes.

A new study suggests that during a potential phase of primordial matter domination, particle interactions may have led to the formation of the universe’s first compact cosmic objects. Less than a ...

Before atomic elements came together, less than a second after the Big Bang, if particles condensed into halos of matter, ...