Hydrated Salt Minerals on Ganymede's Surface: Evidence of an Ocean below

Hydrated Salt Minerals on Ganymede's Surface: Evidence of an Ocean below

Reflectance spectra from Galileo's near-infrared mapping spectrometer (NIMS) suggests that the surface of Ganymede, the largest satellite of Jupiter, contains hydrated materials. These materials are interpreted to be similar to those found on Europa, that is, mostly frozen magnesium sulfate bri...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 2001-05, Vol.292 (5521), p.1523-1525
Hauptverfasser: McCord, Thomas B., Hansen, Gary B., Hibbitts, Charles A.
Format: Artikel
Sprache:eng
Schlagworte:
Artificial satellites
Astrogeology
Astronomy
Cosmochemistry. Extraterrestrial geology
Earth sciences
Earth, ocean, space
Evidence
Evolution, Planetary
Exact sciences and technology
Extraterrestrial geology
Galilean satellites
Ganymede (Satellite)
Ice
Individualized Instruction
Italian ices
Jovian satellites
Jupiter
Magnesium Sulfate - analysis
Materials
Minerals
Minerals - analysis
Natural history
Oceans
Planets
Salts
Satellites
Spectral bands
Spectral reflectance
Spectral signatures
Spectrum Analysis
Subduction
Water
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Zusammenfassung:Reflectance spectra from Galileo's near-infrared mapping spectrometer (NIMS) suggests that the surface of Ganymede, the largest satellite of Jupiter, contains hydrated materials. These materials are interpreted to be similar to those found on Europa, that is, mostly frozen magnesium sulfate brines that are derived from a subsurface briny layer of fluid.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.1059916