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Martian close-up images tell a watery tale
The sharpest images of Mars ever recorded from an orbiting spacecraft suggest that water was once plentiful on or just beneath the crust of the Red Planet.
References:
Hartmann, W.K. In press. Martian cratering VI: Crater count isochrons and evidence for recurrent volcanism from Mars Global Surveyor. Meteoritics and Planetary Science.
Hartmann, W.K., M. Malin, A. McEwen, M. Carr, et al. 1999. Evidence for recent volcanism on Mars from crater clouds. Nature 397(Feb. 18):586.
Malin, M.C., and M.H. Carr. 1999. Groundwater formation of martian valleys. Nature 397(Feb. 18):589.
McEwen, A.S., M.C. Malin, M.H. Carr, and W.K. Hartmann. 1999. Voluminous volcanism on early Mars revealed in Valles Marineris. Nature 397(Feb. 18):584.
Zuber, M.T. 1999. Snapshots of an ancient cover-up. Nature 397(Feb. 18):560.
Further Readings:
Cowen, R. 1998. Did water carve canyon on Mars? Science News 153(Feb. 7):84.
Thomas, P.C., et al. 1999. Bright dunes on Mars. Nature 397(Feb. 18):592.
Additional information and images from the Global Surveyor mission can be found at Malin Space Science Systems' Web site at http://www.msss.com.
Sources:
Michael H. Carr
U.S. Geological Survey
Menlo Park, CA 94025
William K. Hartmann
Planetary Science Institute
Tucson, AZ 85719
Michael C. Malin
Malin Space Science Systems
P.O. Box 910148
San Diego, CA 92191
Maria T. Zuber
Massachusetts Institute of Technology
Department of EAPS, 54-518
Cambridge, MA 02139-4307
From Science News, Vol. 155, No. 8, February 20, 1999, p. 117. Copyright © 1999, Science Service.
