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Engineers and technicians use a crane to lift the main body of NASA's Europa Clipper spacecraft and position it in the High Bay 1 clean room of the Spacecraft Assembly Facility at the agency's Jet Propulsion Laboratory in Southern California. Standing 10 feet (3 meters) high and 5 feet (1.5 meters) wide, the core will be the focus of attention as the spacecraft is assembled for its launch to Jupiter's moon Europa in October 2024. Europa Clipper will conduct nearly 50 flybys of the icy Jovian moon Europa, which scientists are confident harbors an internal ocean containing twice as much water a…