Exclusive: Director Jess Varley, producer Brad Fuller, and stars Kate Mara and Gabriel Luna tell us about bringing the sci-fi ...

Narrator: Without gravity pulling them down, fluids pool in the body, tricking it into thinking it's carrying too much water. As a result, astronauts have to pee... a lot. This makes it easy for ...

NASA astronaut Don Pettit's video of dressing in zero gravity has gone viral. In the clip, Pettit uniquely slides into his pants with both legs simultaneously, showcasing the lighter side of life ...

But astronauts traveling beyond that - such as on missions to the moon or Mars - would experience much higher radiation doses. Gravity plays a critical role in regulating bodily functions.