This Dec. 11, 2016 image made available by NASA shows Jupiter's northern latitudes made by the spacecraft Juno as it performed a close flyby of the gas giant planet. On Thursday, Feb. 23, 2017, NASA said its the spacecraft is stuck making long laps around the gas giant because of sticky valves. (NASA/JPL-Caltech/SwRI/MSSS/Gerald Eichstaedt/John Rogers via AP)
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