People talk about the universe starting with a Big Bang, but how could we possibly know anything about an event that happened billions of years ago – before our planet was even formed?

"We were surprised that water could actually form so early on — even before the birth of the first galaxies." When did life as we know it first emerge in the universe? We don’t know for sure ...

A new study suggests that water first appeared in the universe just a couple hundred million years after the Big Bang — meaning life could have evolved billions of years earlier than previously ...

Credit: Deanne Fitzmaurice/National Geographic Image Collection/Alamy Our universe began with a bang—a big bang. The explosion stretched the very fabric of spacetime, sending superheated matter ...