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The linked article is about NASA's Europa Clipper spacecraft going through a series of environmental tests at Jet Propulsion Laboratory to ensure that it can withstand the harsh conditions it will face during its 1.6-billion-mile voyage to Jupiter's icy moon, Europa. The testing includes simulating the extreme heat and cold, airlessness, and electromagnetic fields of space. The spacecraft will explore the moon and its subsurface ocean and gather data with its suite of scientific instruments to determine whether there are places below the surface that could support life.