Instrument aboard NASA’s Cassini spacecraft to Saturn that covers the visible and infrared wavelengths of the spectrum. The instrument is designed to measure reflected and emitted radiation from atmospheres, rings, and surfaces over 352 contiguous wavelengths from 0.35 to 5.1 micrometres. It helped researchers to determine the compositions, temperatures, and structures of Saturnian system—especially during a long-term cloud study to determine the planet's weather patterns. VIMS also observed the sunlight and starlight that passed through the rings to learn more about ring structure.