G.G. Melies
G.G. Melies asked Neil deGrasse Tyson:

Is part of the planet Teia still rotating with us embedded under the earth's crust?

Neil deGrasse Tyson The hypothesized, Mars-sized impactor "Theia", from the early solar system, sideswiped Earth. The debris cast into orbit coalesced to become the Moon. There's nothing left of Theia, the object, now a mixed part of Earth's crust and the Moon itself.

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