Frozen water deposit on Mars would fill Lake Superior

Lola Gayle, STEAM Register Researchers using NASA's Mars Reconnaissance Orbiter (MRO) ground-penetrating Shallow Radar (SHARAD) instrument say they have found evidence that there is a deposit of frozen water beneath the cracked and pitted plains of Mars' Utopia Planitia region that is equal in size to Lake Superior, the largest of the Great Lakes. According to…