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Rhea
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Rhea, moon of Saturn Rhea and Dione Saturn: Rhea 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.
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View of the Andromeda Galaxy (Messier 31, M31).
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The orbits of the planets and other elements of the solar system, including asteroids, Kuiper belt, Oort cloud, comet
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Saturn. Saturn and its rings. Second largest planet of the solar system. Space Art
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Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
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Rhea, moon of Saturn
Rhea, moon of Saturn NASA's Voyager 1 photographed Rhea, Saturn's second largest moon, on November 12, 1980, from a distance of 128,000 km (80,000 miles). Pictured is one of the most heavily cratered areas on Rhea, dating back to the period immediately following the forming of the planets 4.5 billion years ago.

Rhea

moon of Saturn
Written by
William B. Hubbard
Professor of Planetary Sciences, University of Arizona, Tucson. Author of Planetary Interiors.
William B. Hubbard
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History

Rhea, major regular moon of Saturn and the planetā€™s second largest, after Titan. It was discovered in 1672 by the Italian-born French astronomer Gian Domenico Cassini and named for a Titan of Greek mythology. Rhea at a Glance Rhea has a diameter of 1,528 km (949 miles) and revolves around Saturn in a prograde (in the same direction as Saturnā€™s rotation, counterclockwise as viewed from above the planetā€™s north pole), nearly circular orbit at a...

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