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Cake day: July 7th, 2023

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  • just_another_person@lemmy.worldtoTechnology@lemmy.worldHow can we get to Mars faster
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    13 hours ago

    The basis for what you’re saying is that water is some kind of magic shield that reflects radiation, which is not a thing.

    At best, if you’re talking about lining the hull of a spacecraft and expecting that to work, that’s not a thing either because if the water is taking on any extra mass of any kind, it would obviously expand. Water in its purest form would have to take on mass to “absorb” radiation, expanding a hull and destroying it over time. If you left room in there for expansion, you’d die on exit or reentry of atmosphere without freezing it.

    The only way you can reflect radiation without absorbing something is by denying it entry. Water doesn’t do that.