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Juno is a NASA New Frontiers mission. Juno was launched from Cape Canaveral Air Force Station on August 5, 2011 and is projected to arrive on July 4, 2016. The spacecraft is to be placed in a polar orbit to study Jupiter's composition, gravity field, magnetic field, and polar magnetosphere. Juno will also search for clues about how the planet formed, including whether it has a rocky core, the amount of water present within the deep atmosphere, mass distribution, and its deep winds, which can reach speeds of 618 kilometers per hour.