Prolonged exposure to microgravity leads to various physiological changes, including muscle atrophy and a decrease in bone ...

After spending nearly 7 months in zero gravity, astronaut Sunita Williams overcame the challenge ... made history with an extraordinary 5.5-hour spacewalk. Her journey sheds light on the profound ...

Sunita Williams had launched aboard Boeing’s Starliner spacecraft her colleague and NASA astronaut Butch Wilmore on June 5.(AP) NASA astronaut Sunita Williams is still counting her days in space.

NASA astronaut Sunita Williams has taken what many call the "ultimate selfie." The photo, shared by NASA, was clicked during her ninth spacewalk ... During the 5.5-hour spacewalk, Williams and ...