TIL Mercury is thought to be the almost-exposed core of a planet that was 4.5x bigger before a collision with another proto-planet that blew away most of its crust and mantle


TIL Mercury is thought to be the almost-exposed core of a planet that was 4.5x bigger before a collision with another proto-planet that blew away most of its crust and mantle https://www.space.com/26447-mercury-composition-giant-impact.html iprocrastina June 30, 2020 at 09:05PM

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