Oxygen from Earth’s atmosphere may be traveling all the way to the Moon’s surface

Despite orbiting nearly 240,000 miles from Earth, our Moon may be periodically mingling with our planet’s atmosphere. New research shows that oxygen from Earth could be journeying all the way out to the Moon, where it then gets lodged inside the lunar soil. It’s a process that’s likely been happening for 2.4 billion years, ever since oxygen formed around our planet, meaning the Moon’s soil may contain trapped particles from Earth’s ancient atmosphere.

This oxygen exchange, detailed...

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