Floor-penetrating radar on board NASA’s Mars Perseverance rover has confirmed that the Jezero Crater, shaped by an historic meteor affect simply north of the Martian equator, as soon as harbored an enormous lake and river delta. Over eons, sediment deposition and erosion throughout the crater formed the geologic formations seen on the floor in the present day. The invention of lake sediments reinforces the hope that traces of life could be present in soil and rock samples collected by Perseverance.