Clues from Mars Odyssey Support Oceans Theory
3D map of Mars. See the Univ. of Arizona release for full caption.
November 17, 2008
Mapping of potassium, thorium and iron concentrations on Mars provides evidence for a controversial idea that oceans covered about a third of ancient Mars.
For more information, go to the University of Arizona release at http://uanews.org/node/22563 .