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This image shows a core, about 2.8 inches (71.1 millimeters) in length, collected from a basaltic rock during a test of the Perseverance rover's Sampling and Caching System at NASA's Jet Propulsion Laboratory in Southern California. After a sampling test is completed, engineers carefully remove the core from its sample tube and place it in a sample tray, as they've done here, to document the result. 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, pav…
