Juno is a NASA space probe currently orbiting the planet Jupiter. It was launched from Cape Canaveral Air Force Station on August 5, 2011, as part of the New Frontiers program, and entered Jupiter orbit on July 4, 2016. The spacecraft is 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 (384 mph).