Why do we have a moon?

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. For more, go to
http://vox.com/unexplainable It’s a great place to view show
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