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Engineer Matthew Cameron-Hooper performs a checkout on some systems of the Europa Lander landing gear testbed at NASA's Jet Propulsion Laboratory in Southern California on May 27, 2022. Europa Lander is a concept for a potential future mission that would look for signs of life in the icy surface material of Jupiter's moon Europa. The moon is thought to contain a global ocean of salty water beneath its frozen crust. If life exists in that ocean, signs of its existence called biosignatures could potentially find their way to the surface. In this mission concept, a spacecraft would land on Europ…