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Infrared view of Jupiter’s icy moon Ganymede was obtained by the Jovian Infrared Auroral Mapper instrument aboard NASA’s Juno spacecraft Image Credit: NASA/JPL-Caltech/SwRI/ASI/INAF/JIRAM. This close pass was performed as part of the orbiter’s thirty-fourth orbit of the gas giant , which saw the probe come within 50,109 km of the moon’s surface. The mission team took this opportunity to capture images of Ganymede’s using Juno’s, 2011).
“Ganymede is larger than the planet Mercury, but just about everything we explore on this mission to Jupiter is on a monumental scale. The infrared and other data collected by Juno during the flyby contain fundamental clues for understanding the evolution of Jupiter’s 79 moons from the time of their formation to today.”, 2019, when the orbiter came within 50,109 km and 1,046 km , respectively.
“We found Ganymede’s high latitudes dominated by water ice, with fine grain size, which is the result of the intense bombardment of charged particles. Conversely, low latitudes are shielded by the moon’s magnetic field and contain more of its original chemical composition, most notably of non-water-ice constituents such as salts and organics.
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