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Science 25 August 2000:
Vol. 289. no. 5483, pp. 1305 - 1307
DOI: 10.1126/science.289.5483.1305
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Perspectives

PLANETARY SCIENCE:
Europa's Ocean--the Case Strengthens

David Stevenson

The possibility of a subsurface ocean on Jupiter's moon Europa has been suggested on the basis of theoretical, geological, and spectroscopic arguments. But, as Stevenson explains in his Perspective, none of these arguments were compelling. In contrast, the magnetic field data obtained by the Galileo spacecraft and presented in the report by Kivelson et al., provide persuasive evidence for a conducting layer--most likely a global water ocean--near Europa's surface.

The author is in the Division of Geology and Planetary Science, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA. E-mail: djs{at}gps.caltech.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Special Feature: Possible ecosystems and the search for life on Europa.
C. F. Chyba and C. B. Phillips (2001)
PNAS 98, 801-804
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E-Letters:

Read all E-Letters

Europa vs. Callisto, Still An Enigma?
John F. Cooper
Science Online, 1 Sep 2000 [Full text]
Water Oceans in Icy Satellites
David Stevenson
Science Online, 11 Sep 2000 [Full text]

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