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A comment on Earth was born dry until a cosmic collision made it a blue planet. Parent comment

Re:Earth was born dry until a cosmic collision made it a blu... by quotemstr on Saturday October 04, 2025 @03:37PM (#45476019)
Planetary collisions happen all the time. All of Mercury, Venus, Earth, and Mars in our solar system had them. We can see their signatures in other solar systems too: see https://en.wikipedia.org/wiki/List_of_extrasolar_planetary_c...

Whatever the great filter is, it's not planetary-scale collisions during the accretion phase of solar system formation.

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Re:Earth was born dry until a cosmic collision made it a blu... by mr_toad on Saturday October 04, 2025 @04:50PM (#45476583)
A couple of dozen collisions out of 6000+ known exoplanets. Not exactly common, but not freakishly rare either.
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Re:Earth was born dry until a cosmic collision made it a blu... by quotemstr on Saturday October 04, 2025 @11:01PM (#45478552)
Those are just the ones we caught in the act. That we can see 6,000+ means that there are many more we don't see.
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