LOS ANGELES, March 18 (Xinhua) -- NASA astronauts Suni Williams and Butch Wilmore, who had been stranded at the International Space Station (ISS) since last June, returned to Earth Tuesday afternoon.

Muscle Atrophy: In microgravity, the muscles do not have to support the body’s weight, leading to significant muscle weakening. Astronauts typically lose about 1% of muscle mass per month. For example ...

NASA astronauts Suni Williams and Butch Wilmore, who have been stranded at the International Space Station since last June, started journey back to Earth aboard SpaceX's Dragon spacecraft early ...

A team of Chinese scientists has created a six-legged "space mining robot" inspired by insects, which could be used for prospecting and mining on the moon or asteroids in the future.