Impact Vaporization Identified as Key to Moon's Atmosphere
New research reveals meteorite bombardment as the primary process sustaining the Moon's exosphere over billions of years.
Overview
- Scientists used isotopic analysis of Apollo lunar soil samples to determine the dominant atmospheric process.
- Meteorite impacts vaporize lunar soil, releasing atoms that form and replenish the Moon's thin atmosphere.
- Impact vaporization accounts for approximately 70% of the Moon's exosphere, with ion sputtering contributing the rest.
- The findings underscore the importance of continued sample return missions for understanding planetary atmospheres.
- The study's results were published in the journal Science Advances.