NASA astronaut Sunita Williams has been stranded at the International Space Station (ISS) for over 7 months now (250 days).

The astronauts who ended up having their week-long mission extended to months put their time to good use with this ...

McCandless and fellow astronaut Bob Stewart had strapped themselves into Manned Manoeuvring Units (MMUs) and left the comfort of their ship. The MMUs allowed them to move around in open space, ...

Related: Weightlessness and its effect on astronauts Prolonged inactivity — a possibility on space missions — can ... They get there and they can't walk because they developed osteoarthritis ...

Jumping may protect astronauts’ knee cartilage from microgravity damage. Studies on mice show it increases bone density.

Space has always been a dangerous place, and of the greatest threats to astronauts is radiation. Without the protection of Earth’s atmosphere and magnetic field, human explorers are vulnerable to ...

Elon Musk, the creator of SpaceX, has made an outlandish claim about why NASA astronauts Suni Williams and Butch Wilmore ...

Katelin VonFeldt, a junior at Niwot High School, and Kayla Evans, a senior at Erie High School, were among 20 high school ...

Both astronauts have lived aboard the ISS for extended periods on previous missions, and both say that they're enjoying their time in space on this one. "It is just amazing how, when you come ...

The two NASA astronauts who have been stuck at the International Space Station may be able to return to Earth sooner than expected. In a Tuesday press release, NASA said that SpaceX would switch ...