This information are collected from universetoday.com
The water in the Mars is in the frozen form at its pole. And a recent study confirms that most of the water is at south pole. But visitors to Mars will need to know the exact location of usable water deposits at other Martian locations. A ground-penetrating radar called ScanMars may be up to the task.
ScanMars looks a lot like a metal detector. A sledge contains the suite of instruments that contacts the surface of the ground. The astronauts move the sledge around with a long handle. ScanMars detects underground features by sending and receiving radio-wave impulses into the ground.
During the AMADEE-18 mission to Dhofar, the analogue astronauts tested the instrument in four areas with different geologic characteristics. ScanMars sensed the ground to a depth of 5 meters, and collected 70,000 radar echoes covering 1.4 kilometers.
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