Nation ‘A wild ride’: NASA spacecraft Juno flies by Jupiter’s moon Ganymede June 7, 2021June 7, 2021Doyle Rice, USA TODAYComments Off on ‘A wild ride’: NASA spacecraft Juno flies by Jupiter’s moon Ganymede Monday afternoon, NASA's spacecraft Juno came within 645 miles of Ganymede, which is also the largest moon in the solar system.