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xkcd #3063: Planet Definitions
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this post was submitted on 14 Mar 2025
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Your original idea only holds if it's still valid to claim Mars still has oceans, even though they're all gone. When things stop existing, it changes their properties.
My latest point was to counter your latest point that things like bodies of water or atmosphere should not be considered criteria for identifying a planet or not,
Also, Mars may still have water, under the surface.
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That wasn't a point I made. You said the Earth's skies and oceans would be the same after the hypothetical Earth swaps places with an Earth-sized lump of the Sun event, and I pointed out that they'd be destroyed within seconds. That was kind of separate to the original poorly-thought-through suggestion you made about planet location swaps, and was a second poorly-thought-through claim.
No, that's not what I was saying, at all.
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