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Science 13 March 1998:
Vol. 279. no. 5357, p. 1628
DOI: 10.1126/science.279.5357.1628a
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News & Comment

PLANETARY SCIENCE:
Cheapest Mission Finds Moon's Frozen Water

Richard A. Kerr

Lunar Prospector, the cheapest of the NASA Discovery program's "faster, cheaper, better" missions, last week proved itself the equal of more costly spacecraft. After only a month in orbit, the $63 million, five-instrument spacecraft gathered the first definitive proof of water on the moon. Not only does the detection of water frozen near the lunar poles bolster hopes for eventual colonization of the moon, it strengthens claims that Mercury--innermost and hottest of the planets--has polar water, too.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)