This photo provided by NASA shows a rock collected by the Perseverance rover on Mars. NASA is launching two more mini helicopters to Mars in its effort to recover Martian rocks and soil samples and bring them to Earth.Under the plan announced Wednesday, July 27, 2022, NASA’s Perseverance rover will do double duty and transport samples to the rocket that will launch them off Mars a decade from now.Perseverance already has gathered 11 samples, with about 30 more to go. The most recent sample, a sedimentary rock, holds the greatest promise of containing possible evidence of ancient Martian life, according to Arizona State University's Meenakshi Wadhwa, chief scientist for the retrieval program. (NASA via AP) **FILE**
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