Michael Busch on Nostr: nprofile1q…qeqqq nprofile1q…targs For impacts onto Earth; it is very hard to ...
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For impacts onto Earth; it is very hard to throw things fast enough to escape the Earth without their being vaporized in the process.
So there are no fossils from Earth on the Moon - the largest solid things to have been thrown out are tiny zircons, and to eject those took very large impacts at the end of the Hadean: https://en.wikipedia.org/wiki/Big_Bertha_(lunar_sample) .
Similarly; we have no Venus meteorites even though we have plenty of Mars and Moon ones.
For impacts onto Earth; it is very hard to throw things fast enough to escape the Earth without their being vaporized in the process.
So there are no fossils from Earth on the Moon - the largest solid things to have been thrown out are tiny zircons, and to eject those took very large impacts at the end of the Hadean: https://en.wikipedia.org/wiki/Big_Bertha_(lunar_sample) .
Similarly; we have no Venus meteorites even though we have plenty of Mars and Moon ones.