Planetary Science:
A Lunar Waterworld
Paul G. Lucey
Since the first sample return missions of the 1960s, lunar scientists have operated under the presumption that the Moon is entirely dry. Three papers in this week's issue challenge that notion: Infrared spectroscopic measurements of the lunar surface from spacecraft provide unambiguous evidence for the presence of hydroxyl (OH) or water (1–3).
Hawaii Institute of Geophysics and Planetology, University of Hawaii, 1680 East West Road, POST 504, Honolulu, HI 96822, USA.
E-mail: lucey{at}higp.hawaii.edu