Asteroids May Have Stolen The Oxygen From Earth's Ancient Atmosphere - ScienceAlert
Oct 21, 2021 32 secs
This activity would have produced significant alterations to the chemistry of the planet's atmosphere – but the scale and shape of those alterations, especially the effect on oxygen levels, has been difficult to quantify.

This would have had a much more significant effect on Earth's oxygen levels than previous models.

How, when, and why Earth's atmosphere became rich with oxygen is deeply important to our understanding of planet habitability.

"We think that the whiffs were broken up by impacts that removed the oxygen from the atmosphere.

Only once bombardment slowed did oxygen levels start to rise, changing Earth's surface chemistry and transforming the planet into a habitable world.


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