Astronauts rely on advanced oxygen systems in space, with backup supplies ensuring survival in emergencies. If oxygen fails, ...

Here's a look at some others who found themselves stuck in space — by choice or not — along with some cool spaceflight ...

Two space missions reached their conclusion: one with a splashdown, the other with a quiet lunar death. And thrilling new ...

NASA's Sunita "Suni" Williams and Barry "Butch" Wilmore are home after being stranded in space for nine months. Find out what ...

After nine months aboard the International Space Station, astronauts Butch Wilmore and Suni Williams have finally landed back ...