...-bound rover. Now though, by bouncing radar signals through underground layers of ice, researchers using the Mars Advanced Radar for Subsurface and Ionosphere Sounding instrument, MARSIS, onboard Mars Express have detected the previously undetectable...
... past 17 years. In July 2018, its Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARIS) instrument helped scientists reinvigorate the debate about just how wet Mars might have been in its early history and how wet it might be now, when...