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One of the Editors' Choice selections in
Science, Volume 294, p. 1420, 16 November 2001
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Last Modified: 11 August 2003
Curator: Patricia Lawton, L-3 Communications, Inc.
Email: Patricia.Lawton@gsfc.nasa.gov
Responsible NASA Representative: Mario Acuña
Email: Mario.H.Acuna@nasa.gov