this post was submitted on 21 Sep 2024
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Comparison of a picture from Mars (left) to a picture from Earth (right) (lemmy.world)
submitted 1 month ago by [email protected] to c/[email protected]
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[–] [email protected] 5 points 1 month ago

Also, a recent paper shed some doubt on the impact theory (apparently Earth and Moon isotopes are too similar), so the impact might not have happened or it might have been different than previously thought (glancing and causing the proto-Earth to spin itself apart, or strong enough to completely melt and mix both objects).

In any case, though, yeah, Mars has the wrong composition, size, and orbit for it to have been involved in any impact with Earth. The mistake probably came from Theia often being described as ‘Mars sized’.