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Members of NASA's Mars 2020 Perseverance rover mission celebrate on Feb. 18, 2021, after learning the spacecraft has touched down on Mars. They are in the Entry, Descent and Landing War Room at NASA's Jet Propulsion Laboratory in Southern California. A key objective for Perseverance's mission on Mars is astrobiology, including the search for signs of ancient microbial life. The rover will characterize the planet's geology and past climate, pave the way for human exploration of the Red Planet, and be the first mission to collect and cache Martian rock and regolith. Subsequent missions, curren…
