While Suni Williams and Butch Wilmore have been in space for nine months, Frank Rubio was in orbit for over a year ...
An curved arrow pointing right. NASA astronaut Randy Bresnik captured stunning footage of Earth during a recent spacewalk to refurbish a robotic arm on the International Space Station. More from ...
This bone density loss can put the NASA astronaut at high risk of suffering fractures once back on Earth. The cardiovascular system adapts to microgravity by redistributing fluids in the body.
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