A Search for Far-Ultraviolet Emissions from the Lunar Atmosphere

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Science  16 Nov 1973:
Vol. 182, Issue 4113, pp. 710-711
DOI: 10.1126/science.182.4113.710


An ultraviolet spectrometer aboard the Apollo 17 orbiting spacecraft attempted to measure ultraviolet emissions from the lunar atmosphere. The only emissions observed were from a transient atmosphere introduced by the lunar landing engine. The absence of atomic hydrogen implies that solar wind protons are converted to hydrogen molecules at the lunar surface.