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After the NASA Mars 2020 Perseverance rover mission has collected pristine samples of Mars rock and regolith (broken rock and dust) and deposited them inside collection tubes, they will be dropped off at strategic locations (called "depots") along the rover's driving route. This will be the first phase of the Mars Sample Return campaign. In the late 2020's, NASA and ESA (European Space Agency) will send the Sample Retrieval Lander (SRL) mission to Mars to collect those sample tubes from the surface. To accomplish this, the lander will make a pinpoint landing near Perseverance's driving ro…
