Scientists from MIT and the University of Chicago share their study about the origin of the moon’s atmosphere in Science Advances. After analyzing samples of lunar soil collected by astronauts during NASA’s Apollo missions, their research suggests the lunar atmosphere is primarily a product of “impact vaporization” caused by the Moon’s continuous bombardment by meteorites.
Researchers suspect that two space weathering processes play a role in shaping the lunar atmosphere: impact vaporization and “ion sputtering” — a phenomenon involving solar wind, which carries energetic charged particles from the sun through space. When these particles hit the moon’s surface, they can transfer their energy to the atoms in the soil and send those atoms sputtering and flying into the air.
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