Juno Spacecraft

Juno Spacecraft is a NASA space probe that is circling Jupiter. Lockheed Martin-built it, and NASA's Jet Propulsion Laboratory manages it. As part of the New Frontiers program, the spacecraft was launched from Cape Canaveral Air Force Station on August 5, 2011. On July 5, 2016, Juno Spacecraft entered a polar orbit around Jupiter to begin a scientific examination of the planet. Juno will be purposely deorbited into Jupiter's atmosphere after finishing its mission. NASA launched the Juno spacecraft on August 5, 2011, with a $1 billion expenditure. Since 2016, this spacecraft has been revolving around Jupiter.

Jupiter's composition, gravitational field, magnetic field, and polar magnetosphere are all being measured by Juno Spacecraft. It will also look for indications about how the planet evolved, such as whether it has a rocky core, how much water is present in the deep atmosphere, mass distribution, and the speed of its deep winds, which may exceed 620 km/h.

Cost: $1 billion