What If Earth Picked Up a Second Moon?

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We owe a lot to our moon. Beautiful moonlit walks, higher tides, and regular seasons - all are made possible by our little rocky friend. But what would happen if we picked up a second moon?
Thanks to Dr. Neil Comins at the University of Maine for his orbital mechanics expertise and help with this episode!
Hosted by: Hank Green
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Sources:
Correspondence with Dr. Neil Comins

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