Oort comet cloud

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• Oort cloud — An artist s rendering of the Oort cloud and the Kuiper belt (inset). Sizes of individual objects have been exaggerated for visibility …   Wikipedia

• Nube de Oort — Imagen artística del cinturón de Kuiper y de la nube de Oort. La nube de Oort (también llamada nube de Öpik Oort) es una nube esférica de …   Wikipedia Español

• Nuage interne de Oort — Nuage de Hills Le nuage de Hills également appelé Nuage interne de Oort[1] et Nuage Interne[2] est, en astronomie, un vaste ensemble sphérique hypothétique de corps du nuage d Oort qui aurait sa frontière externe située à 2 3×104 unités… …   Wikipédia en Français

• comet — cometary /kom i ter ee/, cometic /keuh met ik/, cometical, adj. cometlike, adj. /kom it/, n. Astron. a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and… …   Universalium

• Comet — This article is about the astronomical object. For other uses, see Comet (disambiguation). Comet Hale– …   Wikipedia

• Oort cloud — /awrt, ohrt/, Astron. a region of the solar system far beyond the orbit of Pluto in which billions of comets move in nearly circular orbits unless one is pulled into a highly eccentric elliptical orbit by a passing star. [1975 80; after Dutch… …   Universalium

• Comet Rendezvous Asteroid Flyby — Conceptual artwork of the CRAF spacecraft The Comet Rendezvous Asteroid Flyby (CRAF) was a cancelled plan for a NASA led exploratory mission designed by the Jet Propulsion Laboratory during the mid to late 1980s and early 1990s, that planned to… …   Wikipedia

• Oort cloud — noun (astronomy) a hypothetical huge collection of comets orbiting the sun far beyond the orbit of Pluto; perturbations (as by other stars) can upset a comet s orbit and may send it tumbling toward the sun • Topics: ↑astronomy, ↑uranology •… …   Useful english dictionary

• Comet —    The nucleus of a comet is only a few miles across, and made of mostly water ice, with some methane and ammonia. As the comet leaves the area of the Oort Cloud and falls into the orbit of the outer planets, the volatile elements of the nucleus… …   The writer's dictionary of science fiction, fantasy, horror and mythology

• Comet Hyakutake — C/1996 B2 (Hyakutake) Comet Hyakutake captured by the Hubble Space Telescope on April 4, 1996, with an infrared filter. Discovery and designation …   Wikipedia

• Oort, Jan Hendrik — ▪ Dutch astronomer born April 28, 1900, Franeker, Neth. died Nov. 5, 1992, Leiden       Dutch astronomer who was one of the most important figures in 20th century efforts to understand the nature of the Milky Way Galaxy.       After studies at… …   Universalium