structure. The superior quality of the images obtained by the Galileo orbiter between 1995 and 2003 greatly extended the existing knowledge about the Jovian rings. Ground-based observation of the rings by the Keck telescope in 1997 and 2002 and the HST in 1999 revealed the rich structure visible in back-scattered light. Images transmitted by the New Horizons spacecraft in February–March 2007 allowed observation of the fine structure in the main ring for the first time. In 2000, the Cassini'' spacecraft en route to Saturn conducted extensive observations of the Jovian ring system. Future missions to the Jovian system will provide additional information about the rings. Gallery See also Moons of Jupiter Notes References External links Jupiter Rings Fact Sheet Jupiter's Rings by NASA's Solar System Exploration NASA Pioneer project page NASA Voyager project page NASA Galileo project page NASA Cassini project space New Horizons project page Planetary Ring Node: Jupiter's Ring System Rings of Jupiter nomenclature from the USGS planetary nomenclature page Jupiter Jupiter 19790306 de:Jupiter (Planet)#Ringsystem ja:木星の衛星と環#環