Affiliation:
1. U.S. Geological Survey, Mail Stop 964, Box 25046 Federal Center, Denver, CO 80227, USA.
Abstract
Lunar Water
The Moon has been thought to be primarily anhydrous, although there has been some evidence for accumulated ice in permanently shadowed craters near its poles (see the Perspective by
Lucey
, published online 24 September). By analyzing recent infrared mapping by Chandrayaan-1 and Deep Impact, and reexamining Cassini data obtained during its early flyby of the Moon,
Pieters
et al.
(p.
568
, published online 24 September),
Sunshine
et al.
(p.
565
, published online 24 September), and
Clark
et al.
(p.
562
, published online 24 September) reveal a noticeable absorption signal for H
2
O and OH across much of the surface. Some variability in water abundance is seen over the course of the lunar day. The data imply that solar wind is depositing and/or somehow forming water and OH in minerals near the lunar surface, and that this trapped water is dynamic.
Publisher
American Association for the Advancement of Science (AAAS)
Cited by
333 articles.
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