Last updated on April 24, 2014 at 16:36 EDT
Distribution of Water on Mars
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Distribution of Water on Mars

October 13, 2009
Overlay of water equivalent hydrogen abundances and a shade relief map derived from MOLA topography. Mass percents of water were determined from epithermal neutron counting rates using the Neutron Spectrometer aboard Mars Odyssey between February 2002 and April 2003.