MARK GARLICK / SCIENCE PHOTO LIBRARY MARK GARLICK / SCIENCE PHOTO LIBRARY
Juno spacecraft at Jupiter. Computer illustration of NASA's Juno spacecraft over Jupiter's pole. Juno was launched in 2011 on a five-year flight to Jupiter. Unlike previous Jupiter missions, it uses solar panels (three arrays seen here). Previous Jupiter missions were powered by generators fuelled by radioactive decay of nuclear isotopes. The device at the end of the array at left is the magnetometer experiment. After arriving in July 2016, Juno will orbit Jupiter 32 times over the next year, gathering information about the planet's atmosphere, magnetic field and gravitational field. Jupiter, with a diameter of 142, 984 kilometres, is the largest of the planets.
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