Jezero is not just any impact crater on Mars. An old river delta near the western rim of the crater testifies that it once housed a lake. Numerous aqueous minerals prove that liquid water must have been present in it for a very long time - one of the most important prerequisites for life. This is why Jezero is also the target of the current NASA mission Mars 2020, which will start on 30 July 2020 at 13.50 CEST and in February 2021 will begin its search for
traces of life will begin in the former crater lake.