Spaceflight

Spaceflight covers topics related to human presence in outer space. Learn about weightlessness, astronauts and space tourism in this section.

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How long can a human survive in outer space? In science fiction movies, this seems to be an area of much creative license, with some people exploding instantly, and others surviving for nearly a minute without long-term ill effect. I read once that one's blood would boil, but I read elsewhere that this isn't true. So what is it?

Like a firefighter or a rock star, an astronaut is one of those jobs kids say they want to have when they grow up. If you're still serious, we can tell you what it takes.

By William Harris

We are seeing a lot more space suits now that the international space station is occupied. Learn how space suits work and why they cost $12 million each!

By Craig Freudenrich, Ph.D.

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On September 18, 2006, Anousheh Ansari, a telecommunications entrepreneur, became the first female space tourist and the fourth space tourist overall. Could you be next? Find out what's in the works to get you to space.

By Kevin Bonsor