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trajectories of tiny, icy particles ejected from the 36 most active geysers (representing the top 50 percent of the moon's total geysering activity) found on the south polar terrain. The match between real and synthetic images is quite good and strongly supports the suggestion that tendrils are produced by the moon's geysers.
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ones. The scale of the arc-like structures seen in the tendrils allows scientists to determine that the tendril particles are no smaller than about 0.5 microns (a micron is one millionth of a meter), a size consistent with that of E-ring particles found from other
Cassini observations, both imaging and in situ.
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Electromagnetic effects associated with electrical charges that collect on small grains embedded in a magnetosphere like Saturn's can modify the grains' trajectories. These effects are very sensitive to particle size, with smaller particles feeling the effects of charging more strongly than larger
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The
Cassini mission is a cooperative project of NASA, ESA (the European Space Agency) and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington. The Cassini
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The figures labeled "a" and "c" (see annotated image above) are computer-enhanced images of the tendril structures near
Enceladus that were taken at high solar phase angle (174 and 170 degrees, respectively); figures "b" and "d" are synthetic (computer-generated) images produced by following the
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This collage, consisting of two
Cassini images of long, sinuous, tendril-like features from Saturn's moon Enceladus and two corresponding computer simulations of the same features, illustrates how well the structures, and the sizes of the particles composing them, can be modeled by tracing the
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Figure "a" is from the observation of 2006; "c" was taken on July 19, 2013 during
Cassini's Earth-imaging event (see PIA17172). Orbital motion is counter-clockwise in all images.
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orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space
Science Institute in Boulder, Colorado.
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joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use.
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states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."
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trajectories of tiny, icy grains ejected from
Enceladus' south polar geysers.
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Click on a date/time to view the file as it appeared at that time.
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data may be copyrighted if they are not explicitly produced by the
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For more information about the
Cassini-Huygens mission visit
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http://photojournal.jpl.nasa.gov/figures/PIA17191_fig1.jpg
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The NASA website hosts a large number of images from the
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