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Events on Monday 4 July 2016 1
2016Juno Enters Jupiter OrbitNASA spacecraft begins study of gas giantNASA's Juno spacecraft entered orbit around Jupiter after a nearly five-year journey, beginning a mission to study the planet's composition, gravity, and magnetic field. It was only the second spacecraft to orbit Jupiter, after Galileo. Juno's polar orbit provided the first close views of the planet's poles.