New computer simulations suggest the first magnetic fields that emerged after the Big Bang were much weaker than expected — ...

There were two periods of exponential expansion in the Universe: one today, dark energy, and one long ago, inflation. Are they related?

Chemistry in the first 50 million to 100 million years after the Big Bang may have been more active than we expected.

Astronomers have discovered "dust-shrouded supermassive black holes" in the early universe, less than 1 billion years after ...

For the first time, our universe began shining with a light other than the afterglow of the Big Bang. Timeline of the universe. NASA, CC BY Leading up to our Cosmic Dawn, the entire universe was ...

The Big Bang isn't the ultimate beginning, but was preceded by a phase called cosmic inflation. Here's how we're finally learning about it.

In fact, the universe may have no beginning at all. "Our theory suggests that the age of the universe could be infinite," said study co-author Saurya Das, a theoretical physicist at the University ...

In the beginning, there was … well, maybe there was no beginning. Perhaps our universe has always existed — and a new theory of quantum gravity reveals how that could work. "Reality has so many things ...