Discover interesting facts about what black holes are, how they form and what would happen if you fell into one.

The speed of light is the fastest anything can travel. What happens to a photon from a galaxy 25 million light years away on ...

Scientists may have discovered the most powerful particle colliders in the universe — and they're strewn throughout our ...

The new image shows one galaxy piercing another with intense quasar radiation. Astronomers likened the violent galaxy ...

In this protected bubble, "The sperm can be stored there in a viable but functionally suppressed state for anywhere up to ...