As we prepare for missions beyond Earth orbit, one crucial challenge remains: keeping astronauts healthy in microgravity.

Image via Shutterstock No one loves long flights. Between breathing the recycled stale air and the limited leg room, it can be a burden. People have all sorts of tips and tricks to help manage their ...

Add Yahoo as a preferred source to see more of our stories on Google. Long flights can be tough on anyone, but if you've hit the big 5-0, they might feel particularly grueling. It's like your body ...