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Stories about: Planum Boreum

Collision Crater Uncovered by Erosion on Mars NASA's Mars Reconnaissance Orbiter has captured amazing new images that show an odd feature on the northern pole of the planet. It seems to be an impact crater, which was revealed as the terrain in the region slowly eroded.The characteristics of the red planet all indicate evidence of a violent past, like the fa... 17 October 2008 11:08 GMT