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Loading contentAn instrument that captures both an image and a spectrum for every pixel, mapping the composition of a surface or atmosphere by the wavelengths of light it reflects or emits.
Galileo's imaging spectrometer, which mapped the composition of Jupiter's moons and found evidence for salts and a subsurface ocean on Europa.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.
European missions, observatories, and space science imagery.