@dapengguana
The Earth loses oxygen, water, and a variety of other material to space every year. Why hasn't the air pressure dropped?
Original question: The Earth loses oxygen, water, and a variety of other material to space every year. Why hasn't the air pressure dropped?
Earth’s atmospheric mass hasn’t dropped noticeably because the losses are negligible and the reserves are vast. Per Atmospheric escape - Earth, Earth is primarily losing 3kg/s (95,000 tons/year) of hydrogen, with negligible amounts of other gases.
Regardless of the atmospheric reservoir of hydrogen, Earth’s main hydrogen reservoir…
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