March 19, 2009
Mars Express finds depositional process
The European Space Agency says its Mars Express spacecraft has discovered some depositional process in Mars' equatorial regions.
Scientists said the geological evidence, revealed by erosion, comes from the mineralogical composition of the Aram Chaos region, a crater about 175 miles in diameter located nearly directly on the martian equator.
The phenomenon is not unique to the Aram Chaos region since the National Aeronautics and Space Administration's rover Opportunity discovered ferric oxide deposits in Meridiani Planum, about 600 miles away, thereby linking widely separate areas of the planet.
The findings are reported in the Journal of Geophysical Research.