New moons for Saturn.Move over Uranus Uranus - Hideyuki Nakashima ftp://etlport.etl.go.jp/pub/uranus/ftp. When the Cassini Gian Domenico Cassini, 1625–1712, was born in Italy and distinguished himself while at Bologna by his studies of the sun and planets, particularly Jupiter; he determined rotational periods for Jupiter, Mars, and Venus. He was called to Paris in 1669 to supervise the building of the Royal Observatory and remained there to direct it. spacecraft arrives at Saturn Saturn, in astronomySaturn, in astronomy, 6th planet from the sun.Astronomical and Physical Characteristics of SaturnSaturn's orbit lies between those of Jupiter and Uranus; its mean distance from the sun is c.886 million mi (1.43 billion km), almost twice that of Jupiter, and its period of revolution is about 29 1-2 years. Saturn appears in the sky as a yellow, starlike object of the first magnitude., it will have more to look at than scientists had expected. Astronomers last month reported the discovery of four new moons orbiting Saturn. If confirmed, the findings raise the ringed planet's moon count to 22, making it the solar system's record holder. Uranus is the runner-up, with 21 known moons. All four of the new moons are outliers, orbiting at least 15 million kilometers from Saturn's surface. Brett Gladman of the Observatoire de la Cote d'Azur 1 Father of Hananiah (2.) 2 Father of Jaazaniah (4.) in Nice, France, and his colleagues spotted two of the moons on Aug. 7 using the European Southern Observatory's 2.2-meter telescope in La Silla, Chile. Gladman and J.J. Kavelaars of McMaster University McMaster University, at Hamilton, Ont., Canada; nondenominational; founded 1887. It has faculties of humanities, science, social sciences, business, engineering, and health sciences, as well as a school of graduate studies and a divinity college. in Hamilton, Ontario, then recorded the same two objects, as well as two other moons, in late September at the Canada-France-Hawaii Telescope on Mauna Kea Mauna Kea (mou`nə kā`ə), dormant volcano, 13,796 ft (4,205 m) high, in the south central part of the island of Hawaii. It is the loftiest peak in the Hawaiian Islands and the highest island mountain in the world, rising c.32,000 ft (9,750 m) from the Pacific Ocean floor. in Hawaii. An estimated 10 to 50 km across, the objects show up in images taken an hour apart as faint dots of light moving around Saturn. The moons have looping orbits, and astronomers propose that they were captured by Saturn long after the planet formed. In contrast, the inner moons of Saturn, which have nearly circular orbits, probably coalesced from the disk of dust and gas that surrounded the planet during its formation. Gladman's team describes its findings in Oct. 25 circulars of the International Astronomical Union. |
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