Floating about in microgravity might seem like a blissful reprieve for the human body's weight-bearing skeleton, but when astronauts spend months in space, their bone density takes a serious hit that ...

Astronauts face a very difficult challenge in space. In microgravity, their muscles and bones weaken over time. Specialized exercise programs developed for stints on the International Space Station ...

NASA is preparing to send astronauts on journeys that will include longer stretches in microgravity – to the Moon and onward to Mars. Understanding how basic biology works in space will help ...

Space travel is not as easy as it looks, though. The human body is not designed to function properly outside the gravitational pull of Earth. Muscles atrophy, bones become less dense, and walking ...