Underground Explosions Carve Twin Craters on Mars [1]
Wunderground.com - 4/16/13
From our partners. A color view of two craters, both roughly 50 kilometers in diameter, in the Thaumasia Planum region just south of Vallis Marineris at approximately 17°S / 296°E and have a ground resolution of approximately 25 meters per pixel. The northern (right) crater is named Arima, while the southern (left) crater is unnamed. (Courtesy European Space Agency)
Dramatic explosions deep under the Mars surface, possibly involving ice, are believed to have created a pair of massive craters spotted side-by-side in satellite images taken in January by the European Space Agency.
What makes the twin craters remarkable is the central pit found in each, which indicate the presence of water on or just below the surface of the red planet.
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