comet

/'kɔmit/
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Thân thiện
comet

A bright comet streaks across the night sky.

Definition
  1. Noun:
    • A celestial object: A relatively small body in space, composed of ice, dust, and rocky material, that orbits the Sun.
    • Characterized by a visible atmosphere and tail: When a comet approaches the Sun, heat causes its icy core to vaporize, releasing gas and dust that form a glowing head (coma) and often one or two tails that point away from the Sun.
Usage Examples
  • Noun:
    • Halley's Comet is visible from Earth approximately every 76 years.
    • The astronomer discovered a new comet using a powerful telescope.
    • A bright comet with a long tail was spotted in the night sky.
Advanced Usage

  • "Comet of the century": A term used for a comet that becomes exceptionally bright and spectacular.

    • The news media dubbed it the comet of the century, drawing crowds of stargazers.

  • "Comet hunter": An astronomer or amateur who searches for new comets.

    • She became a famous comet hunter after discovering several new objects.
Variants and Related Words

  • Cometary (adj): Relating to or resembling a comet.

    • The telescope captured detailed images of the comet's cometary nucleus.

  • Coma (n): The nebulous envelope of gas and dust surrounding the nucleus of a comet.

    • The comet's coma grew larger as it neared the Sun.
Synonyms
  • Ice dwarf: (Informal/less common) Sometimes used to describe small icy bodies in the solar system, though this is not a precise synonym.
  • Wanderer: (Archaic/poetic) An old term reflecting the unpredictable appearance of comets in the sky.
Related Phrases

  • "Dirty snowball": A colloquial term describing the composition of a comet's nucleus (a mixture of ice and dust).

    • Scientists often describe a comet's core as a dirty snowball.

  • "Comet tail": The stream of gas and/or dust that extends from the comet's head.

    • The solar wind causes the comet's tail to always point away from the Sun.
Idioms
  • "Like a comet": Used to describe something that appears suddenly, is brilliant or spectacular, and then disappears or fades quickly.
    • Her rise to fame was like a comet—bright, brief, and unforgettable.
comet

A bright comet streaks across the night sky.

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

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