Losing air: barrage of small impacts likely erased much of the Earth’s primordial atmosphere

2 diciembre 2014

Researchers believe a blitz of small space rocks, or planetesimals, may have bombarded Earth around the time the moon was formed, kicking up clouds of gas with enough force to permanently eject small portions of the atmosphere into space.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/9bYJM3EXgW0/141202132359.htm