An instrument that combines spectroscopy and imaging for remote-sensing devices. NIMS, which weighs 18 kg, uses mirrors and no lenses. It was launched on the Galileo spacecraft in 1989 to study the surfaces of Jupiter's moons and the atmosphere of the planet. NIMS mapped the surfaces of Europa, Ganymede, and Callisto to determine their mineral distributions, and monitored volcanic activity on Io. It measured infrared radiation on the near-infrared wavelength (0.7–5.2 microns) from Jupiter's atmosphere, providing data that contributed to an understanding of the atmosphere's motions and energy balances, and the nature of Jovian clouds.