AdvertisementNASA Spacecraft Made A Flyby Visit To The Largest Moon In The Solar SystemUpdated June 07, 2021Joe PalcafacebookEmailThe solar system's largest moon, Ganymede, is pictured with Jupiter in a photo by NASA's Cassini spacecraft on Dec. 3, 2000. NASA's Juno mission got close to Ganymede on Monday. (Getty Images)This article was originally published on June 07, 2021.