Ariel


Ariel
/air"ee euhl/, n.
1. (in Shakespeare's Tempest) a spirit of the air who is required to use his magic to help Prospero.
2. Astron. one of the moons of the planet Uranus.
3. Aerospace. one of a series of British satellites that studied the ionosphere, cosmic rays, and x-rays.
4. Also, Arielle /ar'ee el", air'-/. a female given name.
5. a male given name.

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 second nearest of the five major moons of Uranus. It was discovered in 1851 by William Lassell (Lassell, William), an English astronomer, and bears the name of characters in Alexander Pope's poem The Rape of the Lock and William Shakespeare's play The Tempest.

      Ariel revolves around Uranus at a mean distance of 191,240 km (118,830 miles) from the centre of the planet, taking 2.52 days to complete one orbit. Like the other large Uranian moons, Ariel rotates synchronously with its orbital period, keeping the same face toward the planet and the same face forward in its orbit. The moon's mean diameter is about 1,160 km (720 miles). Its density of about 1.67 grams per cubic cm is consistent with a composition of roughly equal parts water ice and rock, perhaps intermixed with a small amount of frozen methane.

      Photographs taken by the U.S. Voyager 2 spacecraft during its flyby of the Uranian system in 1986 show that Ariel's surface is crisscrossed with scarps and long valleylike formations. Some of the latter are partially filled with materials that may have upwelled from the moon's interior as a result of tectonic activity in the past. In a few cases, ice appears to have spread out from the valleys across broad plains, much like glacier flows on Earth. These features and the paucity of large impact craters suggest that Ariel has the youngest surface of all of Uranus's major moons.

Andrew P. Ingersoll
 

      the first international cooperative Earth satellite, launched April 26, 1962, as a joint project of agencies of the United States and the United Kingdom. Design, construction, telemetry, and launching of the 14.5-kilogram (32-lb) satellite was handled in the United States by the National Aeronautics and Space Administration. The United Kingdom was responsible for designing the equipment and the experiments to measure electron density and temperature and composition of positive ions, intensity of solar radiation in ultraviolet Lyman-alpha line, and cosmic rays.

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Universalium. 2010.

Look at other dictionaries:

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  • Ariel VI — Ariel VI …   Wikipédia en Français

  • Ariel VI — war ein britisch amerikanischer Röntgensatellit, entwickelt in Zusammenarbeit des britischen Science Research Council und der NASA. Ariel VI (vor dem Start UK6 genannt) wurde am 2. Juni 1979 mit einer Scout Rakete von der Wallops Flight Facility… …   Deutsch Wikipedia

  • Ariel V — était un télescope spatial anglo américain destiné à l observation du ciel dans le domaine des rayons X. Il a été envoyé le 15 octobre 1974 de la plateforme San Marco, située dans l océan Indien, et a été actif jusqu en 1980 …   Wikipédia en Français

  • Ariel — (рус. Ариэль) торговая марка компании Procter Gamble, выпускающая под этим брендом порошки и гели для стирки белья. На российском рынке торговая марка появилась в 1993 году. Ассортимент Ariel для ручной стирки: Регулярный Горный родник Ariel для… …   Википедия

  • Ariel V — war ein britisch amerikanischer Röntgensatellit der 1970er Jahre, entwickelt in Zusammenarbeit des britischen Science Research Council und der NASA. Ariel V (vor dem Start UK5 genannt) wurde am 15. Oktober 1974 von der San Marco Plattform vor der …   Deutsch Wikipedia

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  • ariel — ⇒ARIEL, subst. masc. LITT. [P. réf. au nom du génie de l air dans la pièce la Tempête de Shakespeare, ou d un ange rebelle dans le Paradis perdu de Milton, ou du chef des Sylphes dans la Boucle de cheveux enlevée de Pope] Être aérien et poétique …   Encyclopédie Universelle

  • ARIEL — (Heb. אֲרִיאֵל). (1) The name given to Jerusalem in Isaiah 29:1–2, 7, where God will bring distress upon Ariel, and will make her like an ariel (for meaning, see below). Ariel in this sense is probably connected with the form erellam in Isaiah 33 …   Encyclopedia of Judaism

  • ARIEL — (Heb. אֲרִיאֵל), town in Samaria, in the administered territories, 40 km. east of Tel Aviv and 65 km. from Jerusalem. Founded in 1978 by 40 families of defense and aviation industry workers, it received municipal status in 1998. In 1996 Ariel s… …   Encyclopedia of Judaism


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