Caloris basin
Date: 20 September 1974
Satellite: Mariner 10
Depicts: Surface detail of Mercury
Copyright: NASA
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Mosaic of images obtained by Mariner 10 of the largest impact basin on Mercury, the multi-ringed Caloris Basin with a diameter of 1300 km. Only the half of the basin that was illuminated at the time is seen in this view.
Last Update: 1 September 2019