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Explanation: The dramatic rotation of the cloud-tops of Saturn every ten-hours is particularly evident from orbit around the gas giant planet. With a good enough telescope, however, such rotation is visible even from Earth, as shown by this time-lapse image sequence from the Hubble Space Telescope taken in November 1990. Particularly evident at that time was a light-colored giant storm cloud system that completely encircled the planet. The storm was not evident twenty years ago during the flybys of the Voyager spacecraft -- a storm of this magnitude was last noted in 1933. Studying the complex atmosphere of Saturn will be one objective of the Cassini spacecraft launched by NASA in 1997 and expected to arrive in 2004.
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Based on Astronomy Picture
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Publications with keywords: Saturn - rotation
Publications with words: Saturn - rotation
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