LRO Detects Helium In Lunar Atmosphere

Lyman Alpha Mapping Project (LAMP) Spectrometer Aboard LRO Makes 1st Spectroscopic Observations Of Helium In Tenuous Lunar Atmosphere; LAMP Examined Ultraviolet Emissions In An Observation Campaign Spanning Over 50 Orbits; Measurements Confirmed Data From 1972 LACE Experiment Deployed By Apollo 17 (L); Next Question: Does Helium Originate From Inside Moon, Or External Sources?

Image Credit: NASA