"on a mathematical analysis of the planet's ability to scatter other objects out of its orbit over a long period of time. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune were classified as neighborhood-clearing ""überplanets"" and Pluto was classified as an ""unterplanet"". One could take this classification system as planet and dwarf planet respectively, with the major difference of the IAU definition classifying the two as distinct categories of celestial bodies instead of two subsets of planets. Some large satellites are of similar size or larger than the planet Mercury, e.g. Jupiter's Galilean moons and Titan. Stern has argued"
"largest of Uranus's satellites, Titania, has a radius of only , or less than half that of the Moon, but slightly more than Rhea, the second-largest satellite of Saturn, making Titania the eighth-largest moon in the Solar System. Uranus's satellites have relatively low albedos; ranging from 0.20 for Umbriel to 0.35 for Ariel (in green light). They are ice–rock conglomerates composed of roughly 50% ice and 50% rock. The ice may include ammonia and carbon dioxide. Among the Uranian satellites, Ariel appears to have the youngest surface with the fewest impact craters and Umbriel's the oldest. Miranda has fault canyons"
"moon, Rhea, may have a tenuous ring system of its own, along with a tenuous atmosphere. Many of the other moons are small: 34 are less than 10 km in diameter and another 14 between 10 and 50 km in diameter. Traditionally, most of Saturn's moons have been named after Titans of Greek mythology. Titan is the only satellite in the Solar System with a major atmosphere, in which a complex organic chemistry occurs. It is the only satellite with hydrocarbon lakes. On 6 June 2013, scientists at the IAA-CSIC reported the detection of polycyclic aromatic hydrocarbons in the upper"
"moons. However, a proposed model on the formation of Titan suggests that Titan was instead formed in a series of giant impacts between pre-existing moons. Iapetus and Rhea are thought to have formed from part of the debris of these collisions. More-recent studies, however, suggest that all of Saturn's moons inward of Titan are no more than 100 million years old; thus, Iapetus is unlikely to have formed in the same series of collisions as Rhea and all the other moons inward of Titan, and—along with Titan—may be a primordial satellite. Iapetus has been imaged multiple times from moderate distances"
"Saturn Rhea is the second-largest moon of Saturn. Titan is the largest moon of Saturn. Its substantial atmosphere makes it the most Earth-like moon in the Solar System and hence a popular science fiction setting. Hyperion is the largest irregularly-shaped moon of Saturn, orbiting between Titan and Iapetus. Iapetus is a large moon orbiting further from Saturn than any of its other large satellites. Half of its surface is very bright while the other half is extremely dark. Investigations since 2004 have also noted its irregular shape, immense impact basins, and a high mountainous ridge on the equator. Phoebe is"
"satellites orbiting Rhea could have stable orbits. Furthermore, the suspected rings are thought to be narrow, a phenomenon normally associated with shepherd moons. However, targeted images taken by the ""Cassini"" spacecraft failed to detect rings around Rhea. It has also been proposed that Saturn's moon Iapetus had a satellite in the past; this is one of several hypotheses that have been put forward to account for its equatorial ridge. Two natural satellites are known to have small companions at both their and Lagrangian points, sixty degrees ahead and behind the body in its orbit. These companions are called trojan moons,"
"less than half that of Triton (the seventh-largest moon in the Solar System) alone. The largest of the satellites, Titania, has a radius of 788.9 km, or less than half that of the Moon, but slightly more than that of Rhea, the second-largest moon of Saturn, making Titania the eighth-largest moon in the Solar System. Uranus is about 10,000 times more massive than its moons. As of 2016, Uranus is known to have 13 inner moons. Their orbits lie inside that of Miranda. All inner moons are intimately connected to the rings of Uranus, which probably resulted from the fragmentation"
"coincident with its rotational period. In other words, Titania is a synchronous or tidally locked satellite, with one face always pointing toward the planet. Titania's orbit lies completely inside the Uranian magnetosphere. This is important, because the trailing hemispheres of satellites orbiting inside a magnetosphere are struck by magnetospheric plasma, which co-rotates with the planet. This bombardment may lead to the darkening of the trailing hemispheres, which is actually observed for all Uranian moons except Oberon (see below). Because Uranus orbits the Sun almost on its side, and its moons orbit in the planet's equatorial plane, they (including Titania) are"
"and in planetary systems beyond the Solar System. Nonetheless, no ""moon of a moon"" or subsatellite is known in the Solar System or beyond the Solar System. In most cases, the tidal effects of the planet would make such a system unstable. The possible detection of a ring system around Saturn's natural satellite Rhea led to calculations that indicated that satellites orbiting Rhea would have stable orbits. Furthermore, the suspected rings are thought to be narrow, a phenomenon normally associated with shepherd moons. However, targeted images taken by the ""Cassini"" spacecraft failed to detect any subsatellites or rings associated with"
"Titan in fiction Titan is the largest moon of Saturn. It has a substantial atmosphere and is the most Earth-like satellite in the Solar System, making it a popular science fiction setting. Science fiction set on Titan can be roughly divided into the pre- and post-Pioneer eras, with a division set by the flyby of Saturn by the ""Pioneer 11"" space probe on April 5, 1973, which showed that Titan's surface was too cold to sustain (Earthlike) life. Somewhat later, the arrival of ""Cassini–Huygens"" mission in 2004 with the ""Huygens"" probe's landing in 2005 showed the presence of hydrocarbon lakes"
"on Titan, leading to further changes in its depiction in science fiction. Titan in fiction Titan is the largest moon of Saturn. It has a substantial atmosphere and is the most Earth-like satellite in the Solar System, making it a popular science fiction setting. Science fiction set on Titan can be roughly divided into the pre- and post-Pioneer eras, with a division set by the flyby of Saturn by the ""Pioneer 11"" space probe on April 5, 1973, which showed that Titan's surface was too cold to sustain (Earthlike) life. Somewhat later, the arrival of ""Cassini–Huygens"" mission in 2004 with"
"Titania (moon) Titania is the largest of the moons of Uranus and the eighth largest moon in the Solar System at a diameter of . Discovered by William Herschel in 1787, Titania is named after the queen of the fairies in Shakespeare's ""A Midsummer Night's Dream"". Its orbit lies inside Uranus's magnetosphere. Titania consists of approximately equal amounts of ice and rock, and is probably differentiated into a rocky core and an icy mantle. A layer of liquid water may be present at the core–mantle boundary. The surface of Titania, which is relatively dark and slightly red in color, appears"
"in the shade. Rhea has a rather typical heavily cratered surface, with the exceptions of a few large Dione-type chasmata or fractures (wispy terrain) on the trailing hemisphere (the side facing away from the direction of motion along Rhea's orbit) and a very faint ""line"" of material at Rhea's equator that may have been deposited by material deorbiting from its rings. Rhea has two very large impact basins on its anti-Cronian hemisphere (facing away from Saturn), which are about 400 and 500 km across. The more northerly and less degraded of the two, called Tirawa, is roughly comparable to the"
"Titan (Varley novel) Titan is a science fiction novel by American writer John Varley, the first book in his Gaea Trilogy, published in 1979. It won the 1980 Locus Award for Best Science Fiction Novel and was nominated for both the Nebula Award for Best Novel in 1979, and the Hugo Award for Best Novel in 1980. 1979 A scientific expedition to the planet Saturn in 2025, aboard the ship ""Ringmaster"", discovers a strange satellite in orbit around the planet. Commanding the ship is Cirocco Jones, a tall NASA career woman, aided by astronomer Gaby Plauget, the clone twin physicists"
"Ligeia Mare. In 2015, the NASA Innovative Advanced Concepts program (NIAC) awarded a Phase II grant to a design study of a submarine to explore the seas of Titan. Ligeia Mare Ligeia Mare is a lake in the north polar region of Titan, the planet Saturn's largest moon. It is the second largest body of liquid on the surface of Titan, after Kraken Mare. Larger than Lake Superior on Earth, it is mostly composed of liquid methane, with unknown but lesser components of dissolved nitrogen and ethane, as well as other organic compounds. It is located at 78° N, 249°"
"ice giants. Some asteroids share the same names as moons of Saturn: 55 Pandora, 106 Dione, 577 Rhea, 1809 Prometheus, 1810 Epimetheus, and 4450 Pan. In addition, two more asteroids previously shared the names of Saturnian moons until spelling differences were made permanent by the International Astronomical Union (IAU): Calypso and asteroid 53 Kalypso; and Helene and asteroid 101 Helena. Saturn's satellite system is very lopsided: one moon, Titan, comprises more than 96% of the mass in orbit around the planet. The six other planemo (ellipsoidal) moons constitute roughly 4% of the mass, and the remaining 55 small moons, together"
"ejecta. These small craters were most likely created by material ejected from the Inktomi impact at a steep angle. Inktomi (crater) Inktomi, also known as The Splat, is a prominent rayed impact crater in diameter located in the southern hemisphere of Saturn's moon Rhea. The crater is named for the Lakota spider-god Iktomi and is located at . Inktomi is thought to be the youngest surface feature on Rhea, with estimates ranging from 8 to 280 million years. The rayed ejecta pattern indicates an oblique impact occurred from the west. The impact ejected pure water ice from beneath Rhea's surface"
"Christiaan Huygens, Titan was the first known moon of Saturn, and the sixth known planetary satellite (after Earth's moon and the four Galilean moons of Jupiter). Titan orbits Saturn at 20 Saturn radii. From Titan's surface, Saturn subtends an arc of 5.09 degrees and would appear 11.4 times larger in the sky than the Moon from Earth. Titan is primarily composed of ice and rocky material. Much as with Venus before the Space Age, the dense opaque atmosphere prevented understanding of Titan's surface until the ""Cassini–Huygens"" mission in 2004 provided new information, including the discovery of liquid hydrocarbon lakes in"
"Rhea (mythology) Rhea (; Ancient Greek: Ῥέα ) is a character in Greek mythology, the Titaness daughter of the earth goddess Gaia and the sky god Uranus as well as sister and wife to Cronus. In early traditions, she is known as ""the mother of gods"" and therefore is strongly associated with Gaia and Cybele, who have similar functions. The classical Greeks saw her as the mother of the Olympian gods and goddesses, but not as an Olympian goddess in her own right. The Romans identified her with Magna Mater (their form of Cybele), and the Goddess Ops. Most ancient"
"numerals, and since then Titania has been designated '. Shakespeare's character's name is pronounced , but the moon is often pronounced , by analogy with the familiar chemical element titanium. The adjectival form, ""Titanian"", is homonymous with that of Saturn's moon Titan. The name ""Titania"" is ancient Greek in origin, meaning ""Daughter of the Titans"". Titania orbits Uranus at the distance of about , being the second farthest from the planet among its five major moons. Titania's orbit has a small eccentricity and is inclined very little relative to the equator of Uranus. Its orbital period is around 8.7 days,"
"great iconographical influence far into the 17th century. These books usually list a male and a female Titan with each planet, Cronus and Rhea with Saturn, Eurymedon and Themis with Jupiter, probably Crius and Dione with Mars, Hyperion and Theia with Sun, Atlas and Phoebe with Moon, Coeus and Metis with Mercury, and Oceanus and Tethys with Venus. The qualities inherited from the planets by their children are as follows: The seven classical planets are those easily seen with the naked eye, and were thus known to ancient astrologers. They are the Sun, Moon, Mercury, Venus, Mars, Jupiter and Saturn."
"Theia In Greek mythology, Theia (; , also rendered Thea or Thia), also called Euryphaessa ""wide-shining"", is a Titaness. Her brother/consort is Hyperion, a Titan and god of the sun, and together they are the parents of Helios (the Sun), Selene (the Moon), and Eos (the Dawn). The name ""Theia"" alone means simply ""goddess"" or ""divine""; ""Theia Euryphaessa"" () brings overtones of extent (, ""eurys"", ""wide"", root: ) and brightness (, ""phaos"", ""light"", root: φαεσ-). Hesiod's ""Theogony"" gives her an equally primal origin, said to be the eldest daughter of Gaia (Earth) and Uranus (Sky). Robert Graves also relates that"
"as their orbits are analogous to the trojan asteroids of Jupiter. The trojan moons are Telesto and Calypso, which are the leading and following companions, respectively, of the Saturnian moon Tethys; and Helene and Polydeuces, the leading and following companions of the Saturnian moon Dione. The discovery of 243 Ida's natural satellite Dactyl in the early 1990s confirmed that some asteroids have natural satellites; indeed, 87 Sylvia has two. Some, such as 90 Antiope, are double asteroids with two comparably sized components. Neptune's moon Proteus is the largest irregularly shaped natural satellite. All other known natural satellites that are at"
"exist in a trojan orbit with larger moons, two mutually co-orbital moons and two moons that act as shepherds of Saturn's F Ring. Two other known regular satellites orbit within gaps in Saturn's rings. The relatively large Hyperion is locked in a resonance with Titan. The remaining regular moons orbit near the outer edge of the A Ring, within G Ring and between the major moons Mimas and Enceladus. The regular satellites are traditionally named after Titans and Titanesses or other figures associated with the mythological Saturn. The remaining 38, with mean diameters ranging from 4 to 213 km, are"
"of significance were made until 1789 when William Herschel discovered two further moons, Mimas and Enceladus. The irregularly shaped satellite Hyperion, which has a resonance with Titan, was discovered in 1848 by a British team. In 1899 William Henry Pickering discovered Phoebe, a highly irregular satellite that does not rotate synchronously with Saturn as the larger moons do. Phoebe was the first such satellite found and it takes more than a year to orbit Saturn in a retrograde orbit. During the early 20th century, research on Titan led to the confirmation in 1944 that it had a thick atmosphere –"
"to ""celebrate life on the Pale Blue Dot"". On February 10, 2015, the ""Cassini"" spacecraft visited Rhea more closely, coming within . The spacecraft observed the moon with its cameras producing some of the highest resolution color images yet of Rhea. ""Cassini"" performed its latest flyby of Saturn's moon Hyperion on May 31, 2015, at a distance of about . ""Cassini"" performed its last flyby of Saturn's moon Dione on August 17, 2015, at a distance of about . A previous flyby was performed on June 16. Between 2012 and 2016, the persistent hexagonal cloud pattern at Saturn's north pole"
"critical point. Recent simulations of planetary migration have suggested that both ice giants formed closer to the Sun than their present positions, and moved outwards after formation (the Nice model). Uranus has 27 known natural satellites. The names of these satellites are chosen from characters in the works of Shakespeare and Alexander Pope. The five main satellites are Miranda, Ariel, Umbriel, Titania, and Oberon. The Uranian satellite system is the least massive among those of the giant planets; the combined mass of the five major satellites would be less than half that of Triton (largest moon of Neptune) alone. The"
"Metis and Adrastea, are within Jupiter's ring system and are also within Jupiter's Roche limit. It is possible that these rings are composed of material that is being pulled off these two bodies by Jupiter's tidal forces, possibly facilitated by impacts of ring material on their surfaces. The complex ring system of Saturn has several such satellites. These include Prometheus (F ring), Daphnis (Keeler Gap), Pan (Encke Gap), Janus, and Epimetheus (both A ring). Uranus also has shepherd moons on its ε ring, Cordelia and Ophelia. They are interior and exterior shepherds, respectively. Both moons are well within Uranus's synchronous"
"in Saturn's magnetic field downstream from Rhea in 1980. These measurements, which were never explained, were made at a greater distance than the ""Cassini"" data. On November 26, 2005, ""Cassini"" made the one targeted Rhea flyby of its primary mission. It passed within 500 km of Rhea's surface, downstream of Saturn's magnetic field, and observed the resulting plasma wake as it had with other moons, such as Dione and Tethys. In those cases, there was an abrupt cutoff of energetic electrons as ""Cassini"" crossed into the moons' plasma shadows (the regions where the moons themselves blocked the magnetospheric plasma from"
"Ardeen and Jeyra Entinn, exhibit a strong sense of inadequacy when confronted, on daily basis, with ""speaking"" people. After the conflict with Superboy-Prime, the Time Institute relocated to Titan. One of their scientists used their time viewer to witness the birth of the universe, something that is strictly taboo. The shockwaves of this event caused all of Titan to implode on itself. Titan (DC Comics) Titan is one of the moons of the planet Saturn. In the 30th and 31st centuries of the the moon is inhabited by a colony of telepaths. It is the fictional home world of Saturn"
"Solar System. However, the color asymmetry of Titania is more likely related to accretion of a reddish material coming from outer parts of the Uranian system, possibly, from irregular satellites, which would be deposited predominately on the leading hemisphere. Scientists have recognized three classes of geological feature on Titania: craters, chasmata (canyons) and rupes (scarps). The surface of Titania is less heavily cratered than the surfaces of either Oberon or Umbriel, which means that the surface is much younger. The crater diameters reach 326 kilometers for the largest known crater, Gertrude (there can be also a degraded basin of approximately"
"about it. At the Voyager 2 images Bianca appears as an elongated object, the major axis pointing towards Uranus. The ratio of axes of the Bianca's prolate spheroid is 0.7 ± 0.2. Its surface is grey in color. Explanatory notes Citations Bianca (moon) Bianca ( ) is an inner satellite of Uranus. It was discovered from the images taken by ""Voyager 2"" on January 23, 1986, and was given the temporary designation S/1986 U 9. It was named after the sister of Katherine in Shakespeare's play ""The Taming of the Shrew"". It is also designated Uranus VIII. Bianca belongs to"
"western elongation."" Mimas is named after one of the Giants in Greek mythology, Mimas. The names of all seven then-known satellites of Saturn, including Mimas, were suggested by William Herschel's son John in his 1847 publication ""Results of Astronomical Observations made at the Cape of Good Hope"". He named them after Titans specifically because Saturn (the Roman equivalent of Cronus in Greek mythology), was the leader of the Titans and ruler of the world for some time. Mimas was a son of the Greek goddess Gaia. The surface area of Mimas is slightly less than the land area of Spain."