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Topic: Tethys (moon)

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	Tethys (moon) - Wikipedia, the free encyclopedia
		Tethys is named after the titan Tethys of Greek mythology.
		Tethys is an icy body similar in nature to Dione and Rhea.
		The western hemisphere of Tethys is dominated by a huge impact crater called Odysseus, whose 400 km diameter is nearly 2/5 of that of Tethys itself.
	en.wikipedia.org /wiki/Tethys_(moon) (619 words)

	Saturn's Moon Tethys
		This view of the surface of Saturn's moon Tethys, taken during Cassini's close approach to the moon on Sept. 24, 2005, reveals an icy land of steep cliffs.
		Tethys was previously known to have color differences on its surface, especially on its trailing side, but this kind of color diversity is new to imaging scientists.
		Because Tethys was warmer when the impact occurred, the crater floor relaxed to the spherical shape of Tethys' surface, and the crater's rim and central peak collapsed.
	www.solarviews.com /eng/tethys.htm (2473 words)

	MSN Encarta - Saturn
		Surrounding the Saturnian satellite Titan and Titan's orbit, and extending to the orbit of Saturn's moon Rhea, is an enormous doughnut-shaped cloud of neutral hydrogen atoms.
		A disk of plasma, composed of hydrogen and possibly oxygen ions, extends from outside the orbit of the moon Tethys almost to the orbit of Titan.
		The surfaces of the five moons are heavily cratered by meteorite impacts.
	ca.encarta.msn.com /encyclopedia_761556443_2/Saturn_(planet).html (1173 words)

	APOD: 2004 November 29 - Saturn's Moon Tethys from Cassini (Site not responding. Last check: 2007-11-07)
		Explanation: Tethys is one of the larger and closer moons of Saturn.
		Tethys is composed almost completely of water ice and shows a large impact crater that nearly circles the moon.
		Because this crater did not disrupt the moon, Tethys is hypothesized to be at least partly liquid in its past.
	antwrp.gsfc.nasa.gov /apod/ap041129.html (157 words)

	Sea and Sky's Tour of the Solar System: Tethys
		She was the personification of the fertile ocean, and her 3,000 children became the springs, lakes, and rivers of the world.
		Tethys is definitely one of the most interesting worlds on out tour, but it does have a few notable surface features.
		Odysseus is a very flat crater that conforms to the shape of the moon itself, but it lacks the ring mountains and central depression that characterize craters on Earth's moon or Mercury.
	www.seasky.org /solarsystem/sky3g4.html (405 words)

	Saturn's Ring and Moon Dynamics
		When the inner moon has passed conjunction, it is slowed and the outer one speeded, restoring the original orbits.
		One intriguing aspect of Saturn's retinue of moons is the three groups of co-orbitals with nearly identical or identical orbital periods.
		The phase locking actions of the four are responsible for the trio of objects in Tethys' orbit.
	www.geocities.com /syzygywjp/Saturn.html (1897 words)

	Saturn's Moon Tethys (Site not responding. Last check: 2007-11-07)
		There is one enormous trench on Tethys about 65 kilometers (40 miles) wide and extending from above the center to the extreme left.
		This view of Tethys was taken by Voyager 2 on August 26, 1981.
		This view of Tethys is a color composite of three images taken by Voyager 2 on August 25, 1981.
	www.iki.rssi.ru /solar/eng/tethys.htm (170 words)

	Tethys
		Tethys is the 8th closest moon to Saturn, with a standoff distance of 294,660 km.
		It is one of the icy moons, similar to the Galilean satellites.
		Tethys is about as wide as the length of the Oregon coast, a width of 1050 km (700 miles).
	www.windows.ucar.edu /cgi-bin/tour.cgi?link=/saturn/moons/tethys.html&sw=false&art=ok&edu=mid&cdp=/windows3.html&cd=false&frp=/windows3.html&fr=f (122 words)

	SATURN : Part 5
		On the opposing side of this moon is clear evidence of huge cracks and fractures across the surface caused by the impact of some other moon or asteroid in the distant past.
		TETHYS is the third major satellite out from Saturn whose name derives from Greek mythology from one of the six Titaness, and she was commonly associated with the fertile sea.
		DIONE in Greek mythology was born either as a daughter of Oceanus and Tethys or as one of the original Titans (as one of the six Titaness).
	homepage.mac.com /andjames/PageSaturn005.htm (4294 words)

	Tethys (moon)
		Tethys (tee'-this or teth'-is, Greek Τηθύς) is a moon of Saturn that was discovered by Giovanni Domenico Cassini in 1684.
		The density of Tethys is 1.21 g/cm3, indicating that it is composed almost entirely of water-ice.
		The co-orbital moons Telesto and Calypso are located within Tethys' Lagrangian points L4 and L5, 60 degrees ahead and behind Tethys in its orbit respectively.
	www.mlahanas.de /Greeks/Astro/Tethys.html (592 words)

	Tethys (Site not responding. Last check: 2007-11-07)
		Tethys is one of Saturn's larger inner moons with a diameter of 1050 km.
		The moon lies at a distance of 295,000 km from Saturn.
		Some areas on Tethys are much less heavily cratered and this could mean that at some point there was geologic activity on the surface.
	starryskies.com /solar_system/saturn/tethys.html (129 words)

	Saturn Sightings: Tethys :: Astrobiology Magazine ::
		Notable for Tethys are its split fissure and enormous crater, both of which leave the impression that its fragile surface is remaking itself slowly.
		Tethys was discovered by Giovanni Cassini, for whom the spacecraft was named.
		Condensed ices give the moons very high albedo (reflection coefficients) but some are mottled with darker regions that may be rich in organic chemicals like methane or ammonia.
	www.astrobio.net /news/modules.php?op=modload&name=News&file=article&sid=1236&mode=thread&order=0&thold=0 (622 words)

	Tethys
		In Greek mythology Tethys was a Titaness and sea goddess who was both sister and wife of Oceanus.
		Tethys' low density indicates that it is almost completely composed of water ice, similar to Dione and Rhea.
		In Greek mythology Telesto was a daughter of Oceanus and Tethys.
	www.nineplanets.org /tethys.html (440 words)

	Space Today Online - Moons of the Solar System
		The Moon is one of the larger natural satellites with a diameter of 2,160 miles.
		The moons are 120,000 miles and 131,000 miles from the center of planet Saturn between the moons Mimas and Enceladus.
		The smallest moon is Deimos, at Mars, only seven miles in diameter, although its size now is rivaled by the small shepherd moons discovered by Cassini at Saturn and by others yet to be counted and named in the rings around Jupiter, Saturn and other giant gas planets in the outer Solar System.
	www.spacetoday.org /SolSys/Moons/MoonsSolSys.html#MoonNames (1335 words)

	The Moons of Saturn - Astronomy for Kids (Site not responding. Last check: 2007-11-07)
		The moons vary widely is both size and appearance, which might make you look at the family portait and wonder if they were even distantly related.
		Tethys is the ninth in the family of Saturnian moons and is a little over six hundred fifty miles in diameter.
		One side of this moon, which is a little over nine hundred miles in diamater, is very bright while the other side looks as if it has been left outside in an industrial area for a very long time.
	www.dustbunny.com /afk/planets/saturn/saturnmoons.html (779 words)

	Astronomy News
		The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 27, 2005, at a distance of approximately 490,000 kilometres from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 117 degrees.
		A slim crescent is all that is visible of the moon's sunlit side, but the left half of the image is dimly lit by "Saturnshine," or reflected light from the planet lying off to the left of Cassini's field of view.
		This map of the surface of Saturn's moon Tethys illustrates the regions that will be imaged by Cassini during the spacecraft's close flyby of the moon on September 24, 2005.
	www.activeboard.com /forum.spark?forumID=58381&subForumID=163878&action=viewTopic&commentID=3037074 (1128 words)

	ESA Science & Technology: Tethys' Great Rift
		This dazzling view of Tethys shows the tremendous rift called Ithaca Chasma, which is 100 kilometres wide in places, and runs nearly three-fourths of the way around the icy moon.
		The moon's heavily cratered face is indicative of an ancient surface.
		The image was taken in visible light with the Cassini spacecraft narrow angle camera on 15 December 2004, at a distance of approximately 560 000 kilometres from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 91 degrees.
	sci.esa.int /science-e/www/object/index.cfm?fobjectid=36240 (153 words)

	APOD: 2002 May 19 - Saturn's Moon Tethys (Site not responding. Last check: 2007-11-07)
		Tethys is now known to be composed almost completely of water ice.
		Tethys shows a large impact crater that nearly circles the planet.
		Tethys was not completely frozen in its past.
	antwrp.gsfc.nasa.gov /apod/ap020519.html (140 words)

	Space Today Online - Cassini explores the Saturn system - Huygens explores Titan
		Tethys up close reveals a huge crater, which has been named Odysseus, and a giant fissure called Ithaca Chasma, which is about 40 miles wide and covers three-quarters of the distance around Tethys.
		Meanwhile, the two moon discoveries – by researchers at Queen Mary College, University of London, and the Space Science Institute, Boulder, Colorado – could elevate the number of moons known to be orbiting Saturn to 35.
		The 190-mi.-wide ring is 86,000 miles from the center of Saturn in the orbit of the moon Atlas between the A-ring and the F-ring.
	www.spacetoday.org /SolSys/Saturn/CassiniSaturnNews.html (7235 words)

	MSN Encarta - Search View - Saturn
		It reached Saturn in July 2004 and began studying the planet and its moons.
		Cassini launched a probe (the Huygens probe) that descended to the surface of Saturn's moon Titan early in 2005.
		Previously, Cassini had detected carbon molecules on the moon’s surface.
	encarta.msn.com /text_761556443__1/Saturn_(planet).html (2012 words)

	International Cassini Mission Photographs Two Saturn Moons
		The Cassini spacecraft performed back-to-back flybys of Saturn moons Tethys and Hyperion September 24-26, coming closer than ever to each of them, according to a September 29 NASA press release.
		Images of Tethys taken during Cassini's close approach to the moon show an icy land of steep cliffs and craters.
		Tethys is 1,071 kilometers (665 miles) across and will be visited again by Cassini in the summer of 2007.
	www.globalsecurity.org /space/library/news/2005/space-050930-usia01.htm (951 words)

	JPL.NASA.GOV: News Releases
		Tethys has a scarred, ancient surface, while Hyperion is a strange, spongy-looking body with dark-floored craters that speckle its surface.
		Images of Tethys taken during Cassini's close approach to the moon on Sept. 24, 2005, reveal an icy land of steep cliffs and craters.
		Cassini flew by Tethys at a distance of approximately 1,500 kilometers (930 miles) above the surface.
	www.jpl.nasa.gov /news/news.cfm?release=2005-158 (597 words)

	The Moons of the Solar System — Tethys ••• THE ROTATING MAP ••• (Site not responding. Last check: 2007-11-07)
		The moon of Saturn –; Tethys (III) – was discovered along with Dione in 1684 by G.D. Cassini – the famous discoverer of the "gap" in Saturn's ring system visible even through large amateur telescopes!
		The moon by this name is in circular prograde orbit (→eccentricity e = 0.000) with a →semimajor axis a = 294,700 km.
		Detecting Tethys' movement by Cassini and comparing the shifts with the changes in the position of Saturn allowed him to determine that it is a true satellite (and not a distant body only projected on the plane of sight).
	ksiezyce.republika.pl /saturn/tethys_en.html (533 words)

	The Moon compared to Tethys (Site not responding. Last check: 2007-11-07)
		The Moon is 1.09 times the diameter of Triton (a satellite of Neptune).
		The Moon is 2.16 times the diameter of Titania (a satellite of Uranus).
		The Moon is 3.31 times the diameter of Tethys (a satellite of Saturn).
	ic-www.arc.nasa.gov /projects/bayes-group/Atlas/size/Moon/Tethys.html (129 words)

	NASA's Solar System Exploration: Planets: Saturn: Moons
		The number of known moons soon increased with high-resolution imaging techniques used on ground-based telescopes.
		Some small moons are trapped in the same orbits as Tethys or Dione.
		Telesto and Calypso occupy the two Lagrangian points of Tethys in its orbit; Helene and Polydeuces occupy the corresponding Lagrangian points of Dione.
	sse.jpl.nasa.gov /planets/profile.cfm?Object=Saturn&Display=Moons (640 words)

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