messenger


messenger
/mes"euhn jeuhr/, n.
1. a person who carries a message or goes on an errand for another, esp. as a matter of duty or business.
2. a person employed to convey official dispatches or to go on other official or special errands: a bank messenger.
3. Naut.
a. a rope or chain made into an endless belt to pull on an anchor cable or to drive machinery from some power source, as a capstan or winch.
b. a light line by which a heavier line, as a hawser, can be pulled across a gap between a ship and a pier, a buoy, another ship, etc.
4. Oceanog. a brass weight sent down a line to actuate a Nansen bottle or other oceanographic instrument.
5. Archaic. a herald, forerunner, or harbinger.
v.t.
6. to send by messenger.
[1175-1225; ME messager, messangere < AF; OF messagier. See MESSAGE, -ER2]
Syn. 1. bearer, courier.

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▪ American racehorse
      (foaled 1780), racehorse who, though a Thoroughbred who sired many successful Thoroughbred (flat) racers, was most important as the foundation sire of the Standardbred (harness racehorse) breed. A son of Mambrino and grandson of Matchem, he was foaled in England but was taken to Philadelphia in 1788. His descendants became known for their trotting ability, and his great-grandson Hambletonian is the ancestor of most modern trotters.

▪ United States spacecraft
in full  Mercury Surface, Space Environment, Geochemistry, and Ranging 
 U.S. spacecraft designed to study the surface and environmental properties of Mercury. The name was selected in honour of ancient Greek observers who perceived Mercury in its 88-day orbit of the Sun and named it for the messenger of the gods (Hermes, known to the Romans as Mercury).

      Messenger was launched on Aug. 3, 2004, by a delta II rocket from Cape Canaveral, Fla. Its first flybys were of Earth, on Aug. 2, 2005, and of Venus, on Oct. 24, 2006, and June 5, 2007. The first two Mercury flybys happened on Jan. 14 and Oct. 6, 2008, and a third was scheduled to take place on Sept. 29, 2009. During the fourth encounter, on March 18, 2011, a thruster maneuver is scheduled to insert Messenger into a 200 × 15,193-km (124 × 9,420-mile) orbit around Mercury. Over the next Mercury year (88 Earth days), Messenger's orbit is expected to be adjusted by solar tidal effects until two final burns trim the orbit to 200 km high and 12 hours long. The nominal mission then would last one year. Messenger was the first mission to Mercury since the flybys of Mariner 10 in 1974.

      Instruments on Messenger include a laser altimeter that will profile the surface of Mercury and a dual-imaging system with wide-angle and telephoto optics and filters that span wavelengths from violet light to the near infrared. Other instruments will measure particles in Mercury's magnetosphere, X-rays (X-ray) and gamma rays (gamma ray) produced by cosmic ray collisions with the surface, and magnetic fields (magnetic field).

 Messenger's first flyby of Mercury revealed that the planet's craters are only half as deep as those of the moon. Mercury's Caloris impact basin (Mercury), one of the youngest and largest impact features in the solar system, was found to have evidence of volcanic vents. Messenger also discovered lobate scarps, which are huge cliffs at the top of crustal faults. These structures indicate that the planet, as it cooled early in its history, shrank by a third more than what had previously been believed.

Dave Dooling, Jr.
 

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Universalium. 2010.

Synonyms:

Look at other dictionaries:

  • MESSENGER — Caractéristiques Organisation …   Wikipédia en Français

  • MESSENGER — bei den Startvorbereitungen NSSDC ID 2004 030A Missionsziel Merkur Auftraggeber NASA …   Deutsch Wikipedia

  • MESSENGER — MErcury Surface, Space ENvironment, GEochemistry and Ranging …   Википедия

  • messenger — Ⅰ. messenger UK US /ˈmesɪndʒər/ noun [C] COMMUNICATIONS ► someone who takes a message or documents from one person to another: »The documents were delivered by special messenger. »I worked in my father s store as a messenger boy. → See also… …   Financial and business terms

  • Messenger — (englisch für „Bote“) steht für: Instant Messenger, ein Programm zur schriftlichen Sofortkommunikation MESSENGER, eine NASA Raumsonde Messenger (Band), eine deutsche Powermetal Band messenger RNA, RNA Transkript eines zu einem Gen gehörigen… …   Deutsch Wikipedia

  • Messenger — puede ser: ● Messenger artefacto enviado por la NASA a Mercurio en el 2004. ● Messenger es el tercer album de Edwin McCain, publicado el 15 de junio de 1999. ● MSN Messenger programa de mensajería instantánea a menudo nombrada como sólo Messenger …   Enciclopedia Universal

  • Messenger — Mes sen*ger, n. [OE. messager, OF. messagier, F. messager. See {Message}.] 1. One who bears a message; the bearer of a verbal or written communication, notice, or invitation, from one person to another, or to a public body; specifically, an… …   The Collaborative International Dictionary of English

  • messenger — (n.) c.1200, messager, from O.Fr. messagier messenger, envoy, ambassador, from message (see MESSAGE (Cf. message) (n.)). With parasitic n inserted by c.1300 for no apparent reason except that people liked to say it that way (Cf. PASSENGER (Cf.… …   Etymology dictionary

  • Messenger — (engl., spr. Messendscher), 1) der Bote; 2) Name mehrer Zeitungen …   Pierer's Universal-Lexikon

  • Messenger — (engl., spr. méssindscher, »Bote«), Name von englischen Zeitungen und Zeitschriften …   Meyers Großes Konversations-Lexikon

  • messenger — index forerunner, harbinger, informer (a person who provides information), liaison, plenipotentiary, proxy, representative (proxy) …   Law dictionary


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