Mars in 3-D

Bouncing a laser beam off the Red Planet, a spacecraft has created a three-dimensional map of the Martian surface that is more detailed than 3-D maps for some parts of Earth.

References:

Smith, D.E., M.T. Zuber, et al. 1999. The global topography of Mars and implications for surface evolution. Science 284(May 28):1495.

Further Readings:

Cowen, R. 1998. Did an ocean flatten Mars' northern half? Science News 153(April 4):218.

Sources:

David E. Smith
NASA's Goddard Space Flight Center
Earth Sciences Directorate
Greenbelt, MD 20771

Maria T. Zuber
Massachusetts Institute of Technology
Department of Earth, Atmospheric, and Planetary Sciences
Cambridge, MA 02139

From Science News, Vol. 156, No. 1, July 3, 1999, p. 11. Copyright © 1999, Science Service.

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