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Dione
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Dione Cracks on Dione Helene Dione Rhea and Dione Tethys (above) and Dione, two satellites of Saturn, as observed by the Voyager 1 spacecraft. The shadow of Tethys is visible on the planet's “surface,” just below the rings (bottom right). False-colour image of Saturn. Three of its satellites (Tethys, Dione, and Rhea) are visible as bright points on the left; a fourth moon, Mimas, can be seen in front of Saturn, below the ring system. This image is based on observations made by the Voyager spacecraft. Hubble Space Telescope: Saturn and moons False-colour images of the ring and satellites of Saturn, taken by the Hubble Space Telescope, Nov. 21, 1995. The satellite Dione appears just above the rings in the first two images; Mimas is visible at the outer edge of the rings; and other moons are visible near Saturn's disk on the right.
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Dione: References & Edit History

Article Contributors

Primary Contributors

  • William B. Hubbard
  • Bonnie Buratti
    Senior Research Scientist, Principal Scientist and Supervisor: Comets, Asteroids, and Satellites Group, NASA Jet Propulsion Laboratory, California Institute of Technology.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Added callout boxes and inline glosses and arranged into new sections. Jan 02, 2026
Modified link of Web site: The Nine Planets - Phobos. Jun 06, 2023
Add new Web site: Space Research Institute of the Russian Academy of Sciences - Dione. Sep 07, 2016
Media added. Sep 23, 2011
Added image of Dione taken by Cassini spacecraft. May 24, 2011
Article revised and updated. Jan 24, 2011
Article revised. Apr 04, 2008
Added new Web site: The Nine Planets - Phobos. Jun 08, 2006
Article revised and updated. May 11, 2006
Article added to new online database. May 27, 1999
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