Showerthoughts

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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.

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If we took material like rock from space and got it back to Earth enough times, would Earth grow as a planet? (sh.itjust.works)

submitted 7 months ago* (last edited 7 months ago) by [email protected] to c/showerthoughts

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As the title says. I'm actually thinking about this hard with my friends because everything that's produced on Earth stays on Earth so it doesn't change size, but what if it's not from Earth but it stays on Earth?

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[–] [email protected] 4 points 7 months ago

One of the proposed methods for terraforming Mars is to lob a bunch of icy rocks at it. That would increase its mass but more significantly also the energy of the falling rocks would convert to heat and melt the ice into water. So enough energy to increase Earth's size would also heat the surface and kill life.