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this post was submitted on 10 Dec 2025
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Theia was/is a recognized planetary body. It was the second planetoid in Proto Earth's orbit around the sun. At some point around 4-5 billion years ago, the two collided and for a very brief period we had two moons. The bigger one fell back to Earth, and the smaller one got ejected into a higher orbit where it remains to this day.
I guess we could call Earth Theia, but she was the smaller of the two proto-planets as far as we can tell.
You're right I meant to say "Gaia" not "Theia". My bad.