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Questions about research and use of water in space environment

21 votes
Accepted

How do space capsules float on water?

The larger ring float around the base both helps keep the capsule stable and insures against the capsule sinking due to water getting inside an open hatch after the crew gets out. …
Russell Borogove's user avatar
5 votes

Water needs for a manned journey to Mars

Humans need 2-4 liters of water per day. Assume a crew of 5; that works out to about 10-20 tons of water if you don't recycle it. … If you have to carry 20 tons of shielding anyway, you could do worse than carrying it in the form of water. …
Russell Borogove's user avatar