After 5 years, Juno has finally reached Jupiter (4 Photos & Video) By: Staff In: Science Jul 5, 2016 864 Liked! 74 Disliked 0 1 NASA’s Juno spacecraft was launched on August 5th, 2011. Its mission is to study Jupiter’s composition, gravity field, magnetic field, and polar magnetosphere. One of its biggest goals is to determine whether or not Jupiter has a rocky core. Like this post? 864 Liked! 0
