The ground-penetrating radar of NASA’s Perseverance rover has found signs of a river-and-delta system at Jezero that is buried deep beneath the surface and might be 4.2 billion years old. The study, led by UCLA, used radar data to study layers of sediment buried more than 35 meters below ground.
scientificamerican.comNASA’s Perseverance Mars rover discovers even older lost rivers at Jezero CraterBy plying its ground-penetrating radar in the depths of Mars’s Jezero Crater, this rover has found even older deltas buried beneath those seen on the surface from space
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