Earth could have lost anywhere between ten and 60 percent of its atmosphere in the collision that is thought to have formed the Moon.
Source:
https://phys.org/news/2020-09-planet-collision-simulations-clues-atmospheric.html
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Earth could have lost anywhere between ten and 60 percent of its atmosphere in the collision that is thought to have formed the Moon.
Source:
https://phys.org/news/2020-09-planet-collision-simulations-clues-atmospheric.html