this post was submitted on 27 Feb 2024
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[โ€“] [email protected] 10 points 8 months ago (1 children)

If I'm not mistaken, Luna is the only moon of same stone and lava as it's parent planet. Charon, too, maybe?

[โ€“] [email protected] 4 points 8 months ago

The verdict is still out on the formation of Earth's only natural satellite, the Moon. But yes, it may be mostly composed of ejecta from Earth after it collided and merged with another protoplanet.