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Radar evidence of subglacial liquid water on Mars

Pajola, M.; Lauro, S. E.; Pettinelli, E. +19 more

The presence of liquid water at the base of the martian polar caps has long been suspected but not observed. We surveyed the Planum Australe region using the MARSIS (Mars Advanced Radar for Subsurface and Ionosphere Sounding) instrument, a low-frequency radar on the Mars Express spacecraft. Radar profiles collected between May 2012 and December 20…