How do you survive in space?

Answer 1

Survival in space requires a pressurized environment, oxygen, and heating. None of these exist in the vaccum of space. You also need protection from the twin hazards of radiation and fast-moving micro-meteoroids.

In the manned space missions, a sealed spacecraft such as the Space Shuttle or the International Space Station can provide a shirt-sleeve environment that has everything except gravity. On long-term missions, astronauts must exercise regularly to keep their muscles and bones in healthy condition, because these bodily systems begin to atrophy in zero gravity.

For excursions into space or to the lunar surface, spacesuits take the place of a walled vehicle, but provide the same environmental supports:

- heavy materials to block radiation and small space particles

- heat exchangers to keep the interior warm but distribute the scorching heat from the Sun

- a pressurized inner suit

- the breathing apparatus that provides oxygen while removing exhaled carbon dioxide.

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