Low gravity and the size of sand grains may play roles in the formation of martian dunes. These dunes, observed by the Mars Global Surveyor, are in the 106-mile-wide (170 kilometer-wide) Proctor Crater. Credit: NASA/JPL/Malin Space Science Systems.
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Low gravity and the size of sand grains may play roles in the formation of martian dunes. These dunes, observed by the Mars Global Surveyor, are in the 106-mile-wide (170 kilometer-wide) Proctor Crater. Credit: NASA/JPL/Malin Space Science Systems. |
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