Ulysses


Ulysses
/yooh lis"eez/; also Brit. /yooh"leuh seez'/, n.
1. Latin name for Odysseus.
2. (italics) a psychological novel (1922) by James Joyce.
3. a male given name.

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▪ European-United States space probe
 joint European-U.S. space probe launched in 1990 that was the first spacecraft to fly over the poles of the Sun and return data on the solar wind, the Sun's magnetic field, and other activity in the Sun's atmosphere at high solar latitudes. Understanding such solar activity is important not only because the Sun is an average star that is available for close scrutiny but also because its activity has important consequences for Earth and its inhabitants as dependence increases on space-based systems that can be affected by what has come to be called "space weather," which is largely driven by solar phenomena.

      The Ulysses spacecraft was launched on Oct. 6, 1990, on the space shuttle. It flew by Jupiter in February 1992, and that planet's strong gravity field was used to send the spacecraft out of the ecliptic of the solar system so that it could enter a polar orbit around the Sun. Ulysses flew past the south pole of the Sun on Sept. 13, 1994, and over the Sun's north pole in 1995, at a time of minimum solar activity. It once again flew over the poles in 2000–01, this time during maximum solar activity, and again in 2006–08, during another solar minimum but with the polarity of the Sun's magnetic field reversed from that of the previous minimum.

      Among Ulysses's discoveries was that the solar wind speed did not increase continuously toward the poles but rather at high latitudes leveled off at 750 km (450 miles) per second. The elemental composition of the solar wind was found to differ between fast and slow solar wind streams. In the polar regions the cosmic-ray flux was not enhanced as much as was expected, because the Sun's magnetic waves, themselves discovered by Ulysses, scattered the cosmic rays.

John M. Logsdon
 

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Universalium. 2010.

Look at other dictionaries:

  • Ulysses — is the Latin name for Odysseus, a character in ancient Greek literature.Ulysses may also refer to:In literature: * Ulysses (poem), a poem by Alfred Lord Tennyson * Ulysses (novel), a novel by James Joyce ** Ulysses (film), a film based on the… …   Wikipedia

  • Ulysses — Ulysses, NE U.S. village in Nebraska Population (2000): 276 Housing Units (2000): 123 Land area (2000): 0.200253 sq. miles (0.518654 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.200253 sq. miles (0.518654… …   StarDict's U.S. Gazetteer Places

  • ULYSSES — Rex Ithacae et Dulichii insularum, filius Laertae et Anticleae, quamquam non desunt, qui ex Sisypho conceptum velint, qui Anticleae, cum ad Laertae nuptias duceretur, vim dicitur obtulisse. Unde Aiax apud Ovid. l. 13. Met. v. 31. s. Quid sanguine …   Hofmann J. Lexicon universale

  • Ulysses (EP) — Ulysses EP de Eiko Shimamiya Grabación 2004 Género(s) J Pop Formato CD Discográfica Geneon entertainment …   Wikipedia Español

  • Ulysses, KS — U.S. city in Kansas Population (2000): 5960 Housing Units (2000): 2269 Land area (2000): 2.893466 sq. miles (7.494043 sq. km) Water area (2000): 0.035064 sq. miles (0.090815 sq. km) Total area (2000): 2.928530 sq. miles (7.584858 sq. km) FIPS… …   StarDict's U.S. Gazetteer Places

  • Ulysses, NE — U.S. village in Nebraska Population (2000): 276 Housing Units (2000): 123 Land area (2000): 0.200253 sq. miles (0.518654 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.200253 sq. miles (0.518654 sq. km) FIPS… …   StarDict's U.S. Gazetteer Places

  • Ulysses, PA — U.S. borough in Pennsylvania Population (2000): 684 Housing Units (2000): 296 Land area (2000): 4.003165 sq. miles (10.368150 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 4.003165 sq. miles (10.368150 sq. km) …   StarDict's U.S. Gazetteer Places

  • Ulysses — m Latin form of the Greek name Odysseus, borne by the famous wanderer of Homer s Odyssey. The name is of uncertain derivation (it was associated by the Greeks themselves with the verb odyssesthai to hate); moreover, it is not clear why the Latin… …   First names dictionary

  • Ulysses — Latin name for ODYSSEUS (Cf. Odysseus), from L. Ulysses, Ulixes. Famous for wandering as well as craftiness and ability at deceit. For d to l alteration, see LACHRYMOSE (Cf. lachrymose) …   Etymology dictionary

  • Ulysses — * Ulysses steht ihm höher als Achill. »Es war ihm (Frd. Simonel, dem Chef des schwarzen Cabinets unter Napoleon III.) stets peinlich, zu brutalen Mitteln seine Zuflucht nehmen zu müssen. Er setzte seine Ehre darein, durch List und Pfiffigkeit zu… …   Deutsches Sprichwörter-Lexikon

  • Ulysses [1] — Ulysses, 1) so v.w. Odysseus; 2) (Papilio U.), ostindischer Schmetterling aus dem. Geschlecht der Ritterfalter, zur Horde der Archiver Linnés gehörig, mit geschwänzten braunen Flügeln, darauf ein himmelblauer, glänzender Fleck, auf den… …   Pierer's Universal-Lexikon


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