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Mars Time Domain Electromagnetic Sounder (MTDEM) Horizontal

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Mars Time Domain Electromagnetic Sounder (MTDEM) Image Courtesy of Southwest Research Institute Concept for a flight version of the Mars Time Domain Electromagnetic Sounder (MTDEM), which uses induction to detect groundwater up to 5 km deep. This illustration shows the MTDEM launcher in its stowed (cruise) and deployed (landed) configurations; spooling projectiles are then ejected using compressed gas, forming a large wire loop on the planet's surface.