myrmepropagandistJan 12, 2023

The moon formed when Theia hit the earth. The surface of the moon is mostly material from the #earth with the same isotopes... but if we could drill into the moon... we could find some of #Theia according to some models of the collision.

Theia is still here! Just covered in a super thick earthy sweater.

I don't know why I find this so exciting-- it's probably not going to be anything shocking...

I guess Theia always seemed... vanished into the deep past. But Theia remains. #musings #moon

Show threadberndandewegJan 12, 2023
@futurebird but it remains a mystery still why the moon in chemistry and isotopes resembles so much our mantle. If you want to cover Theia with earth material, the moon should be more dense than it is. So the only possibility is that Theia (if it existed) should have had nearly the same composition as Earth.
Show threadmyrmepropagandistJan 12, 2023
@berndandeweg I thought the impact theory was pretty much accepted… or that at least it’s the best of the known theories thus far?
Show threadberndandeweg
@futurebird i agree with the latter, but thay does not make it the only possibility...
Jan 12, 2023 at 5:20pmWeb