The Moon Assembled from a Swarm of Earth's Fragments ⚡ экспресс
Original: "Formation of the Moon and Binary Asteroids"
The Moon, Charon, and binary asteroids may have formed from many small impacts, not one giant one.
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Thousands of asteroid impacts knocked a cloud of debris from Earth, which, like a snowball, assembled into the Moon. The same mechanism explains the birth of Pluto's moon Charon and many binary asteroids.
🎯 The Moon is iron-poor, which long didn't fit the single-impact hypothesis: such a collision would have mixed crust and mantle material, enriching the satellite. The new multi-impact model naturally solves this puzzle.