what city on earth is named after planet mars
Mars
On March 18 , 2013 , NASA reported evidence from instruments on the Curiosity rover of mineral hydration , likely hydrated calcium sulfate , in several rock samples including the broken fragments of `` Tintina '' rock and `` Sutton Inlier '' rock as well as in veins and nodules in other rocks like `` Knorr '' rock and `` Wernicke '' rock . Analysis using the rover 's DAN instrument provided evidence of subsurface water , amounting to as much as 4 % water content , down to a depth of 60 cm ( 24 in ) , during the rover 's traverse from the Bradbury Landing site to the Yellowknife Bay area in the Glenelg terrain . In September 2015 , NASA announced that they had found conclusive evidence of hydrated brine flows on recurring slope lineae , based on spectrometer readings of the darkened areas of slopes . These observations provided confirmation of earlier hypotheses based on timing of formation and their rate of growth , that these dark streaks resulted from water flowing in the very shallow subsurface . The streaks contain hydrated salts , perchlorates , which have water molecules in their crystal structure . The streaks flow downhill in Martian summer , when the temperature is above − 23 degrees Celsius , and freeze at lower temperatures .
On March 18 , 2013 , NASA reported evidence from instruments on the Curiosity rover of mineral hydration , likely hydrated calcium sulfate , in several rock samples including the broken fragments of `` Tintina '' rock and `` Sutton Inlier '' rock as well as in veins and nodules in other rocks like `` Knorr '' rock and `` Wernicke '' rock . Analysis using the rover 's DAN instrument provided evidence of subsurface water , amounting to as much as 4 % water content , down to a depth of 60 cm ( 24 in ) , during the rover 's traverse from the Bradbury Landing site to the Yellowknife Bay area in the Glenelg terrain . In September 2015 , NASA announced that they had found conclusive evidence of hydrated brine flows on recurring slope lineae , based on spectrometer readings of the darkened areas of slopes . These observations provided confirmation of earlier hypotheses based on timing of formation and their rate of growth , that these dark streaks resulted from water flowing in the very shallow subsurface . The streaks contain hydrated salts , perchlorates , which have water molecules in their crystal structure . The streaks flow downhill in Martian summer , when the temperature is above − 23 degrees Celsius , and freeze at lower temperatures .