PerspectivePlanetary Science

Nitrogen on the Moon

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Science  10 Nov 2000:
Vol. 290, Issue 5494, pp. 1110-1111
DOI: 10.1126/science.290.5494.1110

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The nitrogen isotopic compositions seen in lunar soils have long been a mystery to planetary scientists. As Becker discusses in his Perspective, new techniques, such as the depth profiling of mineral grains reported by Hashizume et al., are now shedding some light on the matter, allowing some theories to be excluded. Nevertheless, the relative role of the solar wind and other processes remains hotly debated.