If there's one thing everybody knows about space, it's that there's no gravity once you leave the Earth's atmosphere. We all know that don't we? It's actually not true — and an attempt at a ...

After being stranded in space for over nine months, Sunita Williams and Butch Wilmore made a splashdown off the Florida coast ...

Down to their very DNA, astronauts’ bodies can change in weird and sometimes significant ways, particularly during a long flight high above the Earth: They start to elongate, often developing a taller ...

Scientists have long sought the particle that carries the force of gravity, but a new theoretical model tosses out that idea ...

After months in space, Sunita Williams will face “baby feet”—soft, hypersensitive soles, muscle loss, and balance issues as ...

Black holes are points in space that are so dense they create ... In the stellar remnants of a supernova, however, there are no longer forces to oppose that gravity, so the star core begins ...