The campaign to bring pristine Martian samples to Earth will now include two mini helicopters. Artist's illustration of the vehicles that will participate in the Mars sample return campaign organized by NASA and the European Space Agency. (Image credit: NASA/JPL-Caltech) NASA officials involved with the Mars sample return (MSR) effort announced yesterday (July 27) that they plan to redesign the mission, abandoning a previous concept that called for a European Space Agency (ESA) "fetch rover" that would touch down on its own lander. NASA's Perseverance rover, expected to still be active when a NASA MSR lander touches down in 2031, will now be tasked with bringing the samples it is collecting and caching to a Mars ascent vehicle. Failing that, however, two helicopters much like Ingenuity, which landed with Perseverance last year, will be backup options to pick up the caches themselves. The helicopters will be similar to Ingenuity in terms of size and ma...