When you're not being firmly planted onto a solid surface by gravity, it's not just your bones and muscles that suffer. It takes a toll on your brain too.

Humans have been thinking about modifying themselves to survive the rigors of space flight for a long time now. Thankfully, out ideas for how to do it have vastly improved.

If you can trust anyone to point out a genuine UFO, it's an astronaut. Sadly, they might be just as misinformed or probe to personal biases as the rest of us.

Robotics researcher Srikanth Saripalli advances a bizarre argument against human spaceflight and in favor of sending a robots we haven't invented yet to distant worlds.

Astronauts will go stir crazy and get cabin fever on interplanetary missions. And it will have to be every mission planner's job to keep them sane and entertained.

If we're going to have astronauts working and living in space for years at a time, cramming them in tight, fixed spaces without artificial gravity is doing them, and us, a major disservice.

A simulated mission to Mars finds that one of the biggest potential threats to astronauts outside of radiation will be cabin fever.

R.I.P. Neil Armstrong, 08.05.1930 - 08.25.2012

Could we use brain-machine interfaces to harden our astronauts against some of the most pressing dangers of space travel?

Boredom and small spaces for an extended period of time wreak havoc on the human psyche. That's going to be a huge problem on extended missions into deep space.