If there is an absolute law in the universe, it’s that nothing can travel faster than the speed of light. Space is big, and ...

This jet streaming out of a supermassive black hole is traveling at nearly the speed of light. Superman may fly faster than a speeding bullet, but he'd easily lose in a race against a beam of light, ...

Our cosmos is 13.7 billion years old and it all started with the Big Bang. When we look for really distant objects, we can’t really see the Big Bang because the universe was so hot and dense that ...

Astronomers have spotted the most massive known stellar black hole in the Milky Way galaxy after detecting an unusual wobble in space. The so-called "sleeping giant," named Gaia BH3, has a mass that ...