If you think a galaxy is big, compare it to the size of the universe: it's just a tiny dot which, together with a huge number ...

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

When we look for “the biggest” in the universe, it is important to specify our definition of the object of study. Is it something indivisible and with a neat boundary, like a black hole? Or do we ...

From our tiny blue planet to the edge of the observable universe, this video takes you on a breathtaking journey of scale. We ...

Astronomers have discovered the oldest and most distant black hole — a behemoth that likely formed at the dawn of the universe, more than 13 billion years ago. The black hole lies at the center of a ...