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comet    音标拼音: [k'ɑmət]
n. 慧星

慧星

comet
n 1: (astronomy) a relatively small extraterrestrial body
consisting of a frozen mass that travels around the sun in
a highly elliptical orbit

Comet \Com"et\, n. [L. cometes, cometa, from Gr. ? comet, prop.
long-haired, fr. ? to wear long hair, fr. ? hair, akin to L.
coma: cf. F. com[`e]te.] (Astron.)
A member of the solar system which usually moves in an
elongated orbit, approaching very near to the sun in its
perihelion, and receding to a very great distance from it at
its aphelion. A comet commonly consists of three parts: the
nucleus, the envelope, or coma, and the tail; but one or more
of these parts is frequently wanting. See Illustration in
Appendix.
[1913 Webster]

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  • Comet Browser: a Personal AI Assistant
    Comet browser by Perplexity is the AI browser that acts as a personal assistant Automate tasks, research the web, organize your email, and more with Comet
  • Comet - Wikipedia
    A comet is an icy, small Solar System body or interstellar object that warms and begins to release gases when passing close to the Sun, a process called outgassing This produces an extended, gravitationally unbound atmosphere or coma surrounding the nucleus, and sometimes a tail of gas and dust gas blown out from the coma These phenomena are due to the effects of solar radiation and the
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  • Comets - Science@NASA
    Comets are cosmic snowballs of frozen gases, rock, and dust that orbit the Sun When frozen, they are the size of a small town
  • COMET - Science Fiction Movies and Entertainment Television Channel
    Comet is THE destination on free TV for true fans of sci-fi and fantasy We relish everything out-of-this-world and the fans who love it, with some of the most iconic franchises including The X-Files, Stargate SG-1, Buffy The Vampire Slayer, and Grimm, plus fun movie titles that celebrate your sci-fi and fantasy fandom
  • Comet - Official Online Store
    Sneakers Never Shy, Never Sorry Comet is a homegrown lifestyle brand that creates unisex sneakers and believes in living fearlessly and uninhibited With a bold portfolio of 14+ colorways and exclusive drops, Comet delivers sneakers for men, sneakers for women, and running shoes
  • Comet | Definition, Composition, Facts | Britannica
    Comet, a small body orbiting the Sun with a substantial fraction of its composition made up of volatile ices Comets are among the most-spectacular objects in the sky, with their bright glowing comae and their long tails Comets can appear at random from any direction as they move in eccentric orbits around the Sun
  • Comets: Everything you need to know | Space
    Comets are our cosmic time capsules and can reveal a lot about the early solar system
  • Comet - Definition, Composition, Facts
    A comet is an icy body with a coma and tail Learn about its structure, composition, orbit, and role in the Solar System
  • COMET Definition Meaning - Merriam-Webster
    The meaning of COMET is a celestial body that appears as a fuzzy head usually surrounding a bright nucleus, that has a usually highly eccentric orbit, that consists primarily of ice and dust, and that often develops one or more long tails when near the sun





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