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Ganymede
Ganymede The largest satellite of Jupiter, and the largest in the Solar System, at 5265 km in diameter; also known as Jupiter III. Ganymede orbits Jupiter in 7.155 days at a distance of 1 070 400 km. Its period of axial rotation is the same as its orbital period. Ganymede is the brightest of the Galilean satellites, reaching magnitude 4.6 at opposition. It has a surface rich in water ice and a mean density of 1.94 g/cm3, indicating that just over half its composition is rock. Irradiation of the surface ice by ultraviolet light and atomic particles is thought to generate the moon's tenuous oxygen atmosphere. Ganymede's surface is a mixture of high‐albedo (young, smooth) and darker (older, more heavily cratered) terrains. The brighter regions are crossed by linear flow‐like features called sulci, thought to result from partial resurfacing by ice followed by stretching and faulting. Some of the larger impact craters have become palimpsests due to slow, glacial flow of the ice. Ganymede has a weak magnetic field with a strength of 750 nT at the surface, about 40 times weaker than that of the Earth.
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"Ganymede." A Dictionary of Astronomy. 1997. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "Ganymede." A Dictionary of Astronomy. 1997. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O80-Ganymede.html "Ganymede." A Dictionary of Astronomy. 1997. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-Ganymede.html |
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Ganymede
Ganymede (Jupiter III) One of the Galilean satellites, and the largest jovian satellite; it is bigger than Mercury and Pluto. It is believed to have a rock and metal core surrounded by a large mantle of water or water ice, 800–900 km thick, and the surface is of ice, with two types of terrain, one very cratered and dark, the other rather lighter, with many grooves and ridges. These terrains result from tectonic activity, but the details are not known. Both terrains are extensively cratered, the craters being flat, with no ring mountains and central depressions, and suggest the surface is about 3–3.5 Ma old. Ganymede has a magnetic field, embedded within that of Jupiter. Ganymede was discovered in 1610 by Simon Marius and Galileo. Its diameter is 5268 Km; mass 1.48 × 1023kg; mean density 1940kg/m3; visual albedo 0.42; mean distance from Jupiter 1.07 × 106km.
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AILSA ALLABY and MICHAEL ALLABY. "Ganymede." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "Ganymede." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O13-Ganymede.html AILSA ALLABY and MICHAEL ALLABY. "Ganymede." A Dictionary of Earth Sciences. 1999. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Ganymede.html |
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Ganymede
GanymedeGreek myths describe Ganymede as a handsome boy who was kidnapped by the gods to serve as a cupbearer on Mount Olympus*. Born in Troy*, where his father was king, Ganymede came to the attention of Zeus*, who was captivated by his appearance. In some stories, it is Zeus disguised as an eagle—or an eagle sent by Zeus—who seizes the boy and carries him up to the home of the gods. In return for his son, Ganymede's father received a group of immortal horses from Zeus. Some versions of the tale say that the gift was a vine made of gold. Later Zeus placed Ganymede in the sky in the constellation Aquarius. Images of Ganymede sometimes show him carrying a cup or accompanied by an eagle. See also Zeus. immortal able to live forever |
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"Ganymede." Myths and Legends of the World. 2001. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "Ganymede." Myths and Legends of the World. 2001. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1G2-3490900206.html "Ganymede." Myths and Legends of the World. 2001. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1G2-3490900206.html |
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Ganymede
Ganymede , in astronomy, one of the moons, or natural satellites, of Jupiter ; the largest natural satellite in the solar system, it is larger than the planet Mercury. |
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"Ganymede." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "Ganymede." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1E1-Ganyme-ast.html "Ganymede." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-Ganyme-ast.html |
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Ganymede
Ganymede Largest of Jupiter's Galilean satellites, with a diameter of 5262km (3270mi). Its cratered terrain is covered with grooves suggesting recent geological activity.
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"Ganymede." World Encyclopedia. 2005. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "Ganymede." World Encyclopedia. 2005. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O142-Ganymede.html "Ganymede." World Encyclopedia. 2005. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-Ganymede.html |
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Ganymede
Ganymede in Greek mythology, a youth of great beauty. He was carried off by Zeus to be cupbearer to the gods. |
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Cite this article
"Ganymede." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "Ganymede." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1E1-Ganyme-myt.html "Ganymede." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-Ganyme-myt.html |
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Ganymede
Ganymede in Greek mythology, a Trojan youth who was so beautiful that he was carried off to be Zeus' cup-bearer.
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ELIZABETH KNOWLES. "Ganymede." The Oxford Dictionary of Phrase and Fable. 2006. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. ELIZABETH KNOWLES. "Ganymede." The Oxford Dictionary of Phrase and Fable. 2006. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O214-Ganymede.html ELIZABETH KNOWLES. "Ganymede." The Oxford Dictionary of Phrase and Fable. 2006. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O214-Ganymede.html |
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Ganymede
Ganymede
•accede, bead, Bede, bleed, breed, cede, concede, creed, deed, Eid, exceed, feed, Gide, God speed, greed, he'd, heed, impede, interbreed, intercede, Jamshid, knead, lead, mead, Mede, meed, misdeed, mislead, misread, need, plead, proceed, read, rede, reed, Reid, retrocede, screed, secede, seed, she'd, speed, stampede, steed, succeed, supersede, Swede, tweed, weak-kneed, we'd, weed
•breastfeed • greenfeed • dripfeed
•chickenfeed • spoonfeed • nosebleed
•Nibelungenlied • invalid • Ganymede
•Runnymede • airspeed • millipede
•velocipede • centipede • Siegfried
•filigreed • copyread • crossbreed
•proofread • flaxseed • hayseed
•rapeseed • linseed • pumpkinseed
•aniseed • oilseed • birdseed • ragweed
•knapweed • seaweed • chickweed
•stinkweed • blanket weed • bindweed
•pondweed • duckweed • tumbleweed
•fireweed • waterweed • silverweed
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"Ganymede." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "Ganymede." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O233-Ganymede.html "Ganymede." Oxford Dictionary of Rhymes. 2007. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-Ganymede.html |
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