This illustration shows a concept for multiple robots that would team up to ferry to Earth samples of rocks and soil being collected from the Martian surface by NASA’s Mars Perseverance rover.
Credit: NASA/ESA/JPL-Caltech
The next decade will be a critical time for the exploration of Mars with the multi-agency Mars Sample Return (MSR) being the marquee mission. The undertaking has been decades in the making, but an independent review of the MSR architecture raised some key questions about the feasibility and cost.

