Sunday, December 12, 2010
Saturn's rings found in strange zigzag.
<P Align=center> </ P> <P> is currently working on Saturn, "Cassini" spacecraft photographed Saturn's F ring of 4 photos. .</ P> <P> picture is changing in a few hours of shooting, however, surprisingly the same with the naked eye can see the difference in the F ring structure, for example, stripes can be seen in the number of F ring .differences, some places appear to be more curved, while other places look more smooth. .</ P> <P> astronomers believe that any of Saturn's F ring structure of a place depends on Prometheus (Prometheus) and the Titan seventh (Pandora) the position of two satellites, which seemed to .complete the F ring, "shepherd" of the work (Prometheus from the inside, while the Titan seventh from the outside.) .</ P> <P> This is two small satellites, Prometheus is about 102 km in diameter, while the seventh of the diameter of Titan is about 84 km. .Prometheus velocity along its orbit faster than the seventh Saturn every 23 days will exceed Seventeen Titan, this encounter is the periodic emergence Titan F ring spiral reasons. .</ P>.
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