Strangely behaving matter could one day explain some of the mysteries of space.

Albert Einstein might have the answer.

Harvard scientists discuss what the quest to image black holes could tell us about our universe.

Such a mission could be developed soon, allowing astrophysicists to take selfies of the solar system and use the Sun’s gravity as a lens to peer deep into space.

Researchers have detected, for the first time, light from the back side of a black hole. The finding fulfills a prediction from Einstein's work.

Gravity is something every person on Earth intuitively understands: It is what keeps you on the ground. But how come gravity pulls down, rather than pushes up? Einstein came up with the answer.

If humanity wants to travel between stars, people are going to need to travel faster than light. New research suggests that it might be possible to build warp drives and beat the galactic speed limit.