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	NationMaster - Encyclopedia: Janus (moon)
		The orbital relationship between Janus and Epimetheus can be understood in terms of the circular restricted three-body problem, as a case in which the two moons (the third body being Saturn) are similar in size to each other.
		A faint dust ring is present around the region occupied by the orbits of Janus and Epimetheus, as revealed by images taken in forward-scattered light by the Cassini spacecraft in 2006.
		Janus and Epimetheus may have formed from a disruption of a single parent to form co-orbital satellites, but if this is the case the disruption must have happened early in the history of the satellite system.
	www.nationmaster.com /encyclopedia/Janus-%28moon%29 (3925 words)

	Epimetheus (moon) - Wikipedia, the free encyclopedia
		The name Janus was officially approved by the IAU at the same time, although the name had been used informally since Dollfus proposed it a few days after the 1966 discovery.
		Since closer orbits have higher velocities the two moons must inevitably approach each other, and since Epimetheus' diameter is 115 km and Janus' is 178 km it would seem at first glance that a collision is also inevitable.
		Janus and Epimetheus may have formed from a disruption of a single parent to form co-orbital satellites, but if this is the case the disruption must have happened early in the history of the satellite system.
	en.wikipedia.org /wiki/Epimetheus_(moon) (557 words)

	Janus (moon) - Wikipedia, the free encyclopedia
		Janus (jay'-nus, Greek Ιανός) is a moon of Saturn.
		Janus was observed on subsequent occasions and given different provisional designations.
		Janus was observed by Dan Pascu on February 19, 1980 (S/1980 S 1, IAUC 3454), and then by John W. Fountain, Stephen M. Larson, Harold J. Reitsema and Bradford A. Smith on the 23rd (S/1980 S 2, IAUC 3456).
	en.wikipedia.org /wiki/Janus_(moon) (465 words)

	Kids.Net.Au - Encyclopedia > Janus (moon)
		Janus is a moon of Saturn discovered by the French astronomer Audouin Dollfus[?] in 1966.
		Dollfus is credited with the discovery of Janus but it's not really certain whether the object he saw was Janus or Epimetheus and his observations led to a spurious orbit (Walker[?] discovered it independently but his telegram arrived a few hours after Dollfus').
		Janus is extensively cratered with several craters larger than 30 km but few linear features.
	www.kids.net.au /encyclopedia-wiki/ja/Janus_(moon) (183 words)

	Janus, moon of saturn
		This means that whatever moon was on the inside of the orbit moves to the outside and the outside moon moves to the inside.
		Janus and Epimetheus are thought to be brother and sister, and may have been formed by a disruption of a single parent to form their orbital routes.
		Janus also is characterized by craters and a low density, which may presume that she is made of mostly ice.
	www.essortment.com /hobbies/janusmoonsatu_tsoy.htm (552 words)

	NationMaster - Encyclopedia: Janus (moon)
		Janus is currently slightly closer to Saturn than Epimetheus.
		Prometheus (proe-mee-thee-us, Greek Î ÏÎ¿Î¼Î·Î¸ÎÎ±Ï‚) is a moon of Saturn.
		Helene (hel-e-nee, Greek â€˜Î•Î»ÎÎ½Î·) is a moon of Saturn.
	www.nationmaster.com /encyclopedia/Janus-(moon) (3924 words)

	Janus
		Janus is the Roman god of gates and doors (ianua), beginnings and endings, and hence represented with a double-faced head, each looking in opposite directions.
		Janus also represents the transition between primitive life and civilization, between the countryside and the city, peace and war, and the growing-up of young people.
		Janus was represented with two faces, originally one face was bearded while the other was not (probably a symbol of the sun and the moon).
	www.pantheon.org /articles/j/janus.html (426 words)

	Janus (moon) -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-19)
		Janus (jay'-nus, Greek Ιανός) is a (Any natural satellite of a planet) moon of (A giant planet which is surrounded by three planar concentric rings of ice particles; 6th planet from the sun) Saturn.
		Janus occupies essentially the same orbit as the moon ((Greek mythology) brother of Prometheus; despite Prometheus's warning against gifts from Zeus he accepted Pandora as his wife) Epimetheus.
		Janus was observed by Dan Pascu on February 19 1980 (S/1980 S 1,), and then by John W. Fountain, Stephen M. Larson, (Click link for more info and facts about Harold J. Reitsema) Harold J. Reitsema and Bradford A. Smith on the 23rd (S/1980 S 2,).
	www.absoluteastronomy.com /encyclopedia/j/ja/janus_(moon).htm (800 words)

	Reference.com/Encyclopedia/Janus (mythology)
		Janus was frequently used to symbolize change and transitions such as the progression of future to past, of one condition to another, of one vision to another, the growing up of young people, and of one universe to another.
		Janus was supposed to have come from Thessaly in Greece and he shared a kingdom with Camese in Latium.
		In the second revival of The Twilight Zone, the name Janus was used for the main character as she puts on her dead husband's glasses to reveal his killer who turns out to be herself all along--implying that she has lived a double life.
	www.reference.com /browse/wiki/Janus_%28mythology%29 (1637 words)

	Janus, A Moon of Saturn
		Janus [JAY-nus] is the sixth satellite of Saturn.
		Janus and Epimetheus share the same orbit of 151,472 kilometers (94,125 miles) from Saturn's center or 91,000 kilometers (56,547 miles) above the cloud tops.
		This image of Janus was acquired by the Voyager 1 spacecraft on November 12, 1981.
	www.solarviews.com /eng/janus.htm (435 words)

	APOD: 2006 November 7 - Janus: Potato Shaped Moon of Saturn
		Explanation: Janus is one of the stranger moons of Saturn.
		Janus, although slightly larger than Epimetheus, is potato-shaped and has a largest diameter of about 190 kilometers.
		One possible reason for this is a fine dust that might cover the small moon, a surface also hypothesized for Pandora and Telesto.
	antwrp.gsfc.nasa.gov /apod/ap061107.html (148 words)

	Janus: Roman God of Beginnings
		Originally, Janus was portrayed with one bearded face and the other clean-shaven, which may have symbolized the moon and the sun, or age and youth.
		Janus also had a temple on the Forum Olitorium and some time during the First Century, yet another temple was built in his honor on the Forum of Nerva.
		Janus was well-respected and highly-regarded as a God by the ancient Romans and his dual-faced image could be found on most city gates and many Roman coins.
	www.novareinna.com /festive/janus.html (698 words)

	* Janus - (Astronomy): Definition (Site not responding. Last check: 2007-10-19)
		Compared with the satellites of other planets of the solar system, Janus is a large Moon with a diameter of 199(X 191 X 151) km and a mass of 2.01E+18 kg...
		Janus is one of the smaller of the 18 moons of Saturn.
		This heavily-cratered moon orbits at a mean distance of about 94,000 miles (151,472 km) and revolves around Saturn in about 18 hours...
	www.bestknows.com /astronomy/janus.html (433 words)

	janus - OneLook Dictionary Search
		Janus : The American Heritage® Dictionary of the English Language [home, info]
		Janus : The New Dictionary of Cultural Literacy [home, info]
		Phrases that include janus: janus green, janus word, pictorial janus, dousa janus, ed janus, more...
	www.onelook.com /?w=janus&ls=a (285 words)

	TPS: Saturn's moon Janus (Site not responding. Last check: 2007-10-19)
		Epimetheus and Janus share the same orbit within the large gap between Saturn's F and G rings.
		Janus is a good-sized rock but is still pretty small for a moon.
		A crease crosses Janus in this view from February 18, 2005, as Janus crosses the rings.
	www.planetary.org /saturn/janus.html (268 words)

	Janus
		Janus is the 5th closest moon to Saturn, with a standoff distance of 151,472 km.
		Janus is one of the small moons, and is about the size of a county, at 110 x 80 km (75 x 53 miles) wide.
		As a small moon, the composition and surface features of Janus are unknown.
	www.windows.ucar.edu /tour/link=/saturn/moons/janus.html (164 words)

	21 - World
		In particular, the androgyne and Janus are symbols of the union of all the opposites of the psyche: mind and feeling, spirit and body, conflict and harmony, solitude and relationship, action and intuition, paternal ethics and maternal care.
		Janus is often seen with the Clavis et Virga (Key and Rod), which are his emblems as Gatekeeper, for with the Rod he discourages those who are not allowed to enter, and with the Key he opens the gate.
		Thus the astrological symbol of Mercury comprises the cross of the elements, the circle of the sun and the crescent of the moon.
	www.cs.utk.edu /~mclennan/BA/PT/M21.html (11161 words)

	[No title]
		In the Silver Millennium, she was part of the Moon Combat Unit that fought against the Negaverse when it attacked the moon.
		Sailor Janus is from the Moon Kingdom, close to the side where darkness lay.
		She was sent to the Moon Kingdom to train with the others and she found herself a mentor in Guardian Mercury.
	www.freewebs.com /sailor_moon_c/characters/aura.html (1912 words)

	Janus Astrology Software (Site not responding. Last check: 2007-10-19)
		Janus 3, like the original version, is simple to use whatever system of astrology you practice, be it modern or traditional.
		Janus is my first choice in astrology software and I highly recommend it.
		Janus 3 is really quite awesome; remarkably it has been expanded to include modules for every major school of Western Astrology with a versatility and ease of operation that is quite astounding.
	www.astrologyware.com /janus3/index.shtml (265 words)

	Why doesn't the Moon Spin? - Physics Help and Math Help - Physics Forums
		Assume the moon is a sphere and you could suspend it from its geometric center (the center of its core); in a uniform gravitational field it would hang earth-side-face down.
		Whatever the moon's origin (capture by or collision with the earth) it is unlikely to have remained molten long enough to become absolutely homogeneous (mass distributuon wise) and therefore its center of mass does not correspond with its geometric center.
		Physical Libration is due to the the fact that the moon is not perfectly spherical(it is slighty elongated towards the Earth), and that the librations of latittude and longitude cause the Earth's gravity to tug slightly off-center of this elongation.
	www.physicsforums.com /showthread.php?t=14029 (1999 words)

	DOCTOR WHO:THE JANUS CONJUNCTION (Site not responding. Last check: 2007-10-19)
		The planets Janus Prime and Menda are both in orbit of a vast Red Giant star, but are starkly different.
		The plot begins with an atmospheric chase through the ruins of Janus Prime, introducing the menacing spideroids, as well as characters from both sides of the conflict, which is being fought between the two worlds.
		Their tragic situation is a horrifying and unenviable condition, the ways in which each man handles their fate adds to their depth as characters, as well as highlighting that there are no real aggressors in the war, only victims.
	www.geocities.com /tainis99/janus.htm (637 words)

	The Janus Conjunction
		Menda and Janus Prime are twin worlds on either side of a red giant sun, but while Menda is bright and fertile, Janus is dead and shrouded by a perpetual solar eclipse.
		Zemler is nearly in control of the ancient machinery on Janus Prime, but he is also completely insane; the planet’s radiation destroys the lipids which hold together the cells of the human body, and Zemler’s brain is literally melting inside his skull.
		The deterrent did not deter the final war, however, in which Janus Prime’s moon was moved into its permanent geostationary orbit, the Mendans were completely wiped out, and Janus Prime was seeded with isotope decay bombs which irradiated the planet and caused the natives’ deterioration into savages.
	www.drwhoguide.com /whobbc16.htm (1725 words)

	ipedia.com: Janus (moon) Article (Site not responding. Last check: 2007-10-19)
		Janus Discovery Discovered by Audouin Dollfus Discovered in 1966 Orbital characteristics Semimajor axis 151,472 km Eccentricity 0.007 Orbital period 16 h 40 min Inclination 0.14 ° Is a satellite...
		Shortly before, Jean Texereau had photographed Janus on October 29 1966 without realising it (IAUC 1995).
		Janus was also observed by the Pioneer 11 probe when it passed near Saturn on September 1 1979: three energetic particle detectors observed its "shadow" (S/1979 S 2, Tom Gehrels and James A. van Allen, IAUC 3417).
	www.ipedia.com /janus__moon_.html (441 words)

	Spaceflight Now \| Cassini \| Spots on Janus
		This close-up look at Saturn's moon Janus reveals spots on the moon's surface which may be dark material exposed by impacts.
		Janus may be a porous body, composed mostly of water ice.
		This image was taken in visible light with the Cassini spacecraft narrow-angle camera at a distance of approximately 357,000 kilometers (222,000 miles) from Janus and at a Sun-Janus-spacecraft, or phase, angle of 6 degrees.
	www.spaceflightnow.com /cassini/050627janus.html (479 words)

	SPACE.com -- Hints of Unseen Moons in Saturn's Rings
		Bright bands in the left part of the image are peaks of a density wave caused by gravitational stirring of the rings by the moon Janus.
		One study found strong evidence for a small moon, likely just a few miles wide, creating patterns at the edge of a gap that are identical to features at another ring boundary generated by a larger, known moon.
		It is likely that gravity from a nearby small moon, along with collisions between ring particles, confine the particles in a ringlet, he said.
	www.space.com /scienceastronomy/saturn_update_041116.html (1156 words)

	why is the moon drifting into space - Physics Help and Math Help - Physics Forums
		My astronomy book tried saying that the moon is spinning into outer space, away from earth,; it was blamed on tidal effects between the earth and moon and the subsequent generation of frictional forces.
		Now, normally the radius of the moon would lower because the kinetic energy is bigger, but in the same time the potential energy has become much greater and this can only happen if the radius of the moon-orbit has become larger.
		Of course, this is not free energy...increasing the moon's tangential velocity is at the expense of decreasing the Earth's rotational speed.
	www.physicsforums.com /showthread.php?p=497154 (1852 words)

	International Scientists Discover New Ring at Saturn
		It coincides with the orbits of Saturn's moons Janus and Epimetheus.
		Scientists had expected that meteoroid impacts on Janus and Epimetheus might kick particles off the moons' surfaces and inject them into Saturn’s orbit, but they were surprised that a well-defined ring structure exists at this location.
		In the photographs, the moon Enceladus is seen sweeping through the E ring, extending wispy, fingerlike projections into the ring.
	usinfo.state.gov /xarchives/display.html?p=washfile-english&y=2006&m=September&x=20060920104429lcnirellep0.2486841 (832 words)

	Cassini-Huygens: Multimedia-Images
		The terrain on Mimas seen here is about 80 degrees west of the terrain seen in a previously released movie (see Mimas on the Move), which showed the little moon appearing to cross Saturn's ring plane from Cassini's vantage point.
		In that previous movie, the rim of the large impact crater Herschel (130 kilometers, or 80 miles wide) was visible as a flattening of the moon's eastern limb.
		Contrast on Janus was mildly enhanced to aid the visibility of its surface.
	saturn.jpl.nasa.gov /multimedia/images/image-details.cfm?imageID=1442 (374 words)

	JPL.NASA.GOV: News Releases
		The moon with the split personality, Iapetus, presents a perplexing appearance in the latest images snapped by the Cassini spacecraft.
		One hemisphere of the moon is very dark, while the other is very bright.
		This sets Iapetus apart from Saturn's other moons and Jupiter's moons, which tend to be brighter on their leading hemispheres.
	www.jpl.nasa.gov /news/news.cfm?release=2004-182 (459 words)

	Conformal Projection of Janus
		As with all maps, it is the cartographer's interpretation and not all features are necessarily certain given the limited data available - this interpretation stretches the data as far as is feasible.
		For this map, the three dimensional convex hull of the shape model was projected into the Morphographic Conformal Projection (the conventional Stereographic Projection modified for non-spherical worlds).
		The leading side (longitude 90 runs vertically down the centre) faces forwards in the orbit of Janus.
	www.solarviews.com /cap/sat/janus3.htm (245 words)

	Janus loop - Memory Alpha
		The Janus loop was a location where MACO Corporal Hawkins was posted for six months some time prior to being assigned to Enterprise.
		Exactly what the Janus loop might be is unclear from the dialogue.
		It may be a place near or on Janus, a moon that orbits Saturn (Sol VI).
	www.memory-alpha.org /en/index.php/Janus_loop (114 words)

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