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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 ianburrell on Tuesday August 13, 2024 @05:42PM (#41240158)
It would make Mars warmer. It would melt all the ice and CO2. It would give Mars an ocean. Of liquid rock. This is assuming that it doesn't destroy Mars completely. There might be enough fragments to make Solar System dangerous place and destroy life on Earth.

Europa is the size of our Moon. Colliding it with Mars would be similar to the collision that formed our Moon.

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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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Re:All of Earth's water in a single sphere by yobbo on Wednesday August 14, 2024 @04:36AM (#41243939)
Let's do it. No one remembers a coward.
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Re:All of Earth's water in a single sphere by jajko on Wednesday August 14, 2024 @11:23AM (#41247155)
Also nobody remembers when there is nobody alive
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