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Saturn

From The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide
Sixth planet from the Sun, and the second-largest in the Solar System, encircled by bright and easily visible equatorial rings. Viewed through a telescope it is ochre. Its polar diameter is 12,000 km/7,450 mi smaller than its equatorial diameter, a result of its fast rotation and low density, the lowest of any planet. Its mass is 95 times that of the Earth and its magnetic field 1,000 times stronger. Mean distance from the Sun 1.427 billion km/0.886 billion mi Equatorial diameter 120,000 km/75,000 mi Rotational period 10 hours 14 minutes at equator, 10 hours 40 minutes at higher latitudes Year 29.46 Earth years Atmosphere visible surface consists of swirling clouds, probably made of frozen ammonia at a temperature of −170°C/−274°F, although the markings in the clouds are not as prominent as Jupiter's. The Voyager probes, visiting in 1980 and 1981, found winds reaching 1,800 kph/1,100 mph Surface Saturn is believed to have a small core of rock and iron, encased in ice and topped by a…
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Full text Article Saturn

From Astronomy Encyclopedia
Saturn In this high-resolution image of Saturn...
Sixth planet in the Solar System and the second largest; it was the most distant planet known to man before the development of the telescope. The telescopic appearance of the planet is dominated by the majestic system of rings, which were probably first seen by Galileo in 1610, even though he did…
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Full text Article Saturn

From Philip's Encyclopedia
Sixth planet from the Sun and second-largest in the solar system . Viewed through a telescope, it appears as a flattened golden yellow disk encircled by white rings. The rings are made up of particles ranging from dust to objects a few metres in size, all in individual orbits. The main rings are…
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Full text Article Saturn

From Encyclopedia of the History of Astronomy and Astrophysics Full text Article The solar system Full text Article Giant planets
Ontario Lacus, the 15,000 square...
Galileo Galilei had observed Saturn's rings in 1610, but he thought that he had seen two satellites of Saturn. In 1659, however, Christiaan Huygens correctly interpreted the observations as being those of a ring around the planet (see next section). On 25 March 1655, Huygens discovered the first…
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Full text Article SATURN

From Gaither's Dictionary of Scientific Quotations
English astronomer There is not perhaps another object in the heavens that presents us with such a variety of extraordinary phenomena as the planet Saturn: a magnificent globe, encompassed by a stupendous double ring: attended by seven satellites: ornamented with equatorial belts: compressed at the…
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Full text Article Saturn

From Collins Dictionary of Astronomy
The sixth planet of the Solar System and, with an equatorial diameter of 120 537 km, the second largest. It orbits at a distance of between 9.01 and 10.04 AU from the Sun once every 29.46 years; oppositions recur two weeks later each year. It has a polar diameter of 107 519 km so that its oblateness…
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Full text Article Saturn

From Science Encyclopedia: Encyclopedia of Space and Astronomy
A launch vehicle is a rocket-propelled vehicle...
Family of expendable launch vehicles developed by NASA (Wernher von Braun's team at the Marshall Space Flight Center in Huntsville, Alabama) to support the Apollo Project. The Saturn 1B was used initially to launch Apollo lunar spacecraft into Earth orbit to help the astronauts train for the crewed…
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Full text Article Saturn

From The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide
Sixth planet from the Sun, and the second-largest in the Solar System, encircled by bright and easily visible equatorial rings. Viewed through a telescope it is ochre. Its polar diameter is 12,000 km/7,450 mi smaller than its equatorial diameter, a result of its fast rotation and low density, the…
| 706 words
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Full text Article Saturn

From Britannica Concise Encyclopedia
Saturn, showing an Earth-sized storm...
Sixth planet from the Sun, named for the Roman god of sowing and seed. The second largest nonstellar object in the solar system after Jupiter, it is about 95 times as massive as Earth and has more than 700 times its volume. Saturn’s outer layers are gaseous, mainly hydrogen. Models of its interior…
| 303 words , 1 image
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Full text Article Saturn

From Science Encyclopedia: Encyclopedia of Space and Astronomy
Saturn's gorgeous rings have made it a symbol for...
Saturn is the sixth planet from the Sun and to many the most beautiful celestial object in the solar system. To the naked eye the planet is yellowish in color. This planet is named after the elder god and powerful Titan of Roman mythology (Cronus in Greek mythology), who ruled supreme until he was…
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From The Chambers Dictionary
the ancient Roman god of agriculture; commonly used for the Greek Kronos, with whom he came to be identified; the second in size and sixth in distance from the sun of the major planets, believed by the astrologers to induce a cold, melancholy, gloomy temperament; the metal lead ( alchemy ). [L…
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