The Moon and the Earth

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There's a new theory that argues that these weird earmuff blobs might be Thea. They're denser than the rest of the mantle and they're massive, larger than continents. In this theory, the Earth swallowed Thea and the moon is an orb of melted Earth flung into space from the collision. But you know, this theory is going to be hard to prove.

In all our searching of the universe, we’ve never seen another moon like ours. It's big, it's weird, and it has played a huge role in shaping our planet. But how did we get it? Every possible story points to cataclysm.

This episode originally ran on June 15, 2022. It is part of our Lost Worlds series exploring scientific mysteries buried in the deep past.

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