Submitted by StoryAndAHalf t3_y6k4rp in todayilearned
A_Vandalay t1_isrb7u5 wrote
Reply to comment by BigBeard77 in TIL 5,200 tons of space dust falls on Earth every year by StoryAndAHalf
Most of the gas lost to space is hydrogen and helium. Due to its lower molar mass it is much easier for these molecules to reach escape velocity.
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