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A comment on All of Earth's water in a single sphere. Parent comment

Re:All of Earth's water in a single sphere by Mistletoe on Tuesday August 13, 2024 @05:57PM (#41240279)
But would it stay on Mars? I thought the issue was there was no dynamo in the core, which lets solar winds strip it away. How long would it stay?
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Re:All of Earth's water in a single sphere by ianburrell on Tuesday August 13, 2024 @06:10PM (#41240359)
It would stay molten for millions of years.

Not sure if Europa's water would be flung into space, make atmosphere, or make a boiling ocean.

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Re:All of Earth's water in a single sphere by yobbo on Wednesday August 14, 2024 @04:39AM (#41243976)
There's probably a way to engineer it such that the spin of the planet is 24h, the core is spun up. We'd also like ~365 day years.
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Re:All of Earth's water in a single sphere by px43 on Wednesday August 14, 2024 @08:49AM (#41245473)
At some point I saw a design for a machine you could park at the Lagrange point between Mars and the Sun that would collect solar power and spit out a magnetic field strong enough to deflect enough of the solar winds that we wouldn't need to worry about that.
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