Astronomy
Solar Wind Sputtering Weathering of Airless Bodies
Quick fact
On the Moon, solar wind protons sputter surface atoms at a rate that contributes enough material to maintain the lunar exosphere, a layer so thin that the atoms rarely collide. These sputtered atoms have been detected by spacecraft like NASA's LADEE, confirming the process's reality.
Why this is interesting
You've seen the Moon's cratered surface, but did you know that it is slowly being sandblasted by invisible particles from the Sun?