This is a new chapter in the history of Martian exploration. March 2020, which left Cape Canaveral on July 30, 2020, should land on the Martian surface around 10 p.m. this Thursday. This mission marks the beginning of an adventure that astronomers will have waited for almost forty years: the Mars Sample Return (MSR).
NASA has therefore planned to take, using a robot called Perseverance, the fragments of rocks and regolith dust that will one day be brought back and analyzed on Earth in a high security laboratory. Why such a precaution? Because the samples could very well contain traces of a life form prospering or having prospered on Mars!