One moment occurred in 1984 when NASA astronaut Bruce McCandless II became the first human to spacewalk or float free from ...

The unbelievable story behind the ‘most terrifying’ image NASA has ever taken of astronaut Bruce McCandless II who did the first-ever untethered spacewalk.

These experiments are essential not only for astronauts' health, but also for potentially developing new treatments for osteoporosis on Earth, Wang said. In the plant cultivation cabinet of the ...