Magellan


Magellan
Magellanic /maj'euh lan"ik/, adj.
/meuh jel"euhn/, n.
1. Ferdinand, c1480-1521, Portuguese navigator: discoverer of the Straits of Magellan 1520 and the Philippines 1521.
2. Strait of, a strait near the S tip of South America between the mainland of Chile and Tierra del Fuego and other islands, connecting the Atlantic and the Pacific. 360 mi. (580 km) long; 21/2-17 mi. (4-27 km) wide.

* * *

▪ United States spacecraft
 U.S. spacecraft that from 1990 to 1994 used radar to create a high-resolution map of the surface of Venus.

 The Magellan spacecraft was launched by the National Aeronautics and Space Administration from the space shuttle on May 4, 1989. The primary spacecraft instrument was a synthetic aperture radar (radar) that could obtain images of the Venusian surface through the clouds that permanently surround the planet. Magellan arrived at Venus on Aug. 10, 1990, and was placed in an orbit over the planet's poles so that, as the planet rotated, the spacecraft could obtain images of almost all of its surface. There were three eight-month mapping cycles between 1990 and 1992; Magellan mapped 98 percent of the planet's surface with a resolution of 100 metres (330 feet) or better. The radar images showed that most of the surface was covered by volcanic materials, that there were few impact craters (suggesting that the surface is relatively young geologically), and that there was no evidence of plate tectonic (plate tectonics) activity or water erosion, although there was some evidence of wind erosion. The Magellan mission also determined the topography of the Venusian surface, measured the Venusian gravity field, and provided suggestive evidence that the planet's interior differs in major ways from Earth's interior. On Oct. 12, 1994, Magellan was sent to a crash landing on Venus.

John M. Logsdon
 

* * *


Universalium. 2010.

Look at other dictionaries:

  • Magellan — may refer to: Ferdinand Magellan, a Portuguese explorer who led part of the first expedition around the world Magellan (band), a progressive rock band Magellan (search engine), a forerunner of the Excite web portal Lotus Magellan, a file manager… …   Wikipedia

  • Magellan S — Magellan (sonde spatiale) Pour les articles homonymes, voir Magellan. Magellan est une sonde interplanétaire américaine lancée le 4 mai 1989 par la navette spatiale Atlantis (mission STS 30). Il a fallu 462 jours au vaisseau spatial qui pesait… …   Wikipédia en Français

  • MAGELLAN (F. de) — MAGELLAN FERNãO DE MAGALHÃES (1480 env. 1521) Navigateur portugais, né dans la province de Trás os Montes, d’une famille de petite noblesse, Fern ao de Magalh aes (Magellan) prit du service très tôt en Afrique, puis en Asie (1509). Comme la cour… …   Encyclopédie Universelle

  • Magellan — (Fernand de) en portugais Fernão de Magalhães (1480 1521), navigateur portugais, au service de l Espagne à partir de 1512. Il chercha, en 1519, à passer au S. de l Amérique et découvrit le détroit qui porte son nom (1520). Il aborda, après une… …   Encyclopédie Universelle

  • Magellan — (spr. mägéllän), Seefahrer, s. Magalhães …   Kleines Konversations-Lexikon

  • Magellan — Magellan1 [mə jel′ən] Ferdinand 1480? 1521; Port. navigator in the service of Spain: discovered the Strait of Magellan & the Philippine Islands Magellanic [maj΄ə lan′ik] adj. Magellan2 [mə jel′ən] Strait of channel between the South American… …   English World dictionary

  • Magellan — Magellan, Seefahrer, s. Magalhães …   Meyers Großes Konversations-Lexikon

  • Magellan — Magellan, Fernando de, eigentlich Magalhaens, Portugiese, zeichnete sich durch kriegerischen Muth in Ostindien aus, wurde zurückgesetzt und trat darüber erzürnt in span. Dienste. Er erhielt den Auftrag, den Gedanken des Columbus, nach Ostindien… …   Herders Conversations-Lexikon

  • Magellan — anglicized name of Portuguese navigator Fernüo de Magalhües (c.1470 1521) …   Etymology dictionary

  • Magellan — (izg. màgeljan), Ferdinand (port. Fernȅo de Magalhȅes, šp. Fernando Magallanes) (o.1480 1521) DEFINICIJA portugalski moreplovac, poveo španjolsku ekspediciju koja je prva oplovila svijet (1519 1522) …   Hrvatski jezični portal

  • Magellan — Este artículo o sección necesita referencias que aparezcan en una publicación acreditada, como revistas especializadas, monografías, prensa diaria o páginas de Internet fidedignas. Puedes añadirlas así o avisar …   Wikipedia Español


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.