Sentences with phrase «ringed impact basin»
VOLCANIC TERRAIN During a 2009 flyby, Messenger spotted Rachmaninoff, a 170 - mile - wide, double - ringed impact basin.
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For decades, scientists have debated the significance of these rings, which are found around the largest impact basins on the moon, Mars, and Earth.
When an asteroid struck there, the impact created a ring of material that rises more than one mile above the surroundings and stretches out to 2,500 miles from the basin center.