this post was submitted on 12 Jun 2024
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Space

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Would astronauts’ kidneys survive a roundtrip to Mars? (www.ucl.ac.uk)
submitted 2 weeks ago by [email protected] to c/space
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[–] [email protected] 1 points 2 weeks ago

The volume of shielding water needed is the difference between those two cylinders, or 22⋅π⋅2.752−20⋅π⋅1.752≈522.68−192.42=330.26m3. As one cubic meter of water weighs 1 metric ton (1,000kg), that's 330,260kg to get into space

Honestly, 330 tonnes doesn't seem too unacheivable to me. That's less than the mass of the ISS, which was built using much smaller rockets than are currently in development.