Living in the constant free fall of outer space can do a number on your body, from muscle atrophy to psychological malaise, it's tough up there.

As we prepare for missions beyond Earth orbit, one crucial challenge remains: keeping astronauts healthy in microgravity. Without daily exercise, their muscles, bones and cardiovascular systems weaken ...

The return of astronauts Butch Wilmore and Sunita Williams last month has reignited conversations about the physical and psychological conditioning astronauts undergo when traveling to and returning ...

1. A brief history of NASA astronaut selection -- 2. Applying to become an astronaut -- 3. Selection -- 4. Astronaut probationary training -- 5. Technical assignments -- 6. Types of mission -- 7.

NASA astronaut requirements 2026: Becoming a NASA astronaut is a challenging journey. Applicants need specific degrees and experience. Training lasts two years, covering survival, robotics, and flying ...

“Astronauts have to undergo intensive periods of training and may participate in spaceflights that last for months. During this time, their body will be subject to a great deal of stress and good ...

Training is underway for NASA’s newest class of astronaut candidates at the Johnson Space Center in Texas. The nearly two-year long process began this past September for the four men and six women of ...