Craters in the Meridiani Planum region of Mars
Three craters stretch across the Meridiani Planum region of Mars. The nearest is an old, 34-km diameter crater, that is almost worn away. The second is covered in dark material, most likely a substance resembling volcanic ash; it is 50 km wide. The third, more distant crater is smaller at 15 km wide. It possesses a dark floor; this may be because material from the largest crater has been blown out by the wind and has settled in the smallest one.
ESA has identified the primary landing site for the ExoMars Entry, Descent and Landing Demonstrator Module (EDM) in a flat and rock-free area of the Meridiani Planum region. The EDM is scheduled for launch in March 2016, arriving at the Red Planet approximately nine months later.
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