One of the theories about the mystery rock I've heard is that it's a chunk of Earth rock that got blown up and landed.. there is, apparently, a list of geological events that were energetic enough to fling rocks quite a bit bigger than that out into space.
I gather there's some weirdness about it's isotopes that makes it a possibility, but it's just blue-sky speculation at present. Although in theory Mars should be peppered with Earth rocks, just as Earth is with Martian meteorites.
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dancing_serpent
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Date: 2021-04-06 10:34 pm (UTC)One of the theories about the mystery rock I've heard is that it's a chunk of Earth rock that got blown up and landed.. there is, apparently, a list of geological events that were energetic enough to fling rocks quite a bit bigger than that out into space.
I gather there's some weirdness about it's isotopes that makes it a possibility, but it's just blue-sky speculation at present. Although in theory Mars should be peppered with Earth rocks, just as Earth is with Martian meteorites.