How do spacesuits work? | James May Q&A | Head Squeeze

You've seen the videos of those astronauts on the International Space Station getting suited and booted in a spacesuit before a spacewalk, but how exactly does the space suit work?

A spacesuit has to protect you from the glaring radiation from the sun as well as keeping you warm from the extreme cold of outer space. As well as that is has to make sure you have enough oxygen and enough movement so you can actually do your job.

It also has to be pressurised to about 4.7PSI. Otherwise the empty vacuum of outer space will make your organs increase to twice their normal size and you will meet a very unpleasant untimely death.

Don't fancy building your own spacesuit, why not build an elevator into space? http://www.youtube.com/watch?v=annVRxRjj4c&feature=c4-overview-vl&list=PLMrtJn-MOYmeNkbYzXsEluioufGDxuqtO

Martin Archer has all the information you need on when humans will be able to go to Mars http://www.youtube.com/watch?v=fYthxj-bO0I&list=PLMrtJn-MOYme6klSjJXoZfWmNZ6ZthOSA&index=12

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Видео How do spacesuits work? | James May Q&A | Head Squeeze канала BBC Earth Lab