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comet

comet

390 4.3
A body of ice and dust that orbits the sun and often has a bright tail
  • noun
  • /ˈkɒmɪt/
translation icon : cometa
  • The scientist explained how a comet forms a tail when it approaches the Sun.
  • comet's ice
  • comet's tail
  • comet's orbit

Meteorites and comets could and did reach it.

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Examples

  • His thousands of photographs of comets provided a rich resource for generations of researchers.

    Academic text (1992)
  • And people ask me, OK, well, this one, which is named Borisov, this comet is familiar.

  • If life were on a comet, would we know it?

  • A planet that was once a comet, as you can see.

  • I thought I saw that comet.

  • Of course, we know now that the comet fell far short of these early estimates.

    Academic text (1992)
  • Take a look, there's a comet headed directly towards Earth.

  • Now, however, we can send spacecraft directly to comets and make in situ measurements.

    Academic text (1992)
  • The United States' involvement with Comet Halley received another disastrous blow in early 1986.

    Academic text (1992)
  • For one thing, yes, water was acquired by the Earth by comets and asteroids that slammed into the Earth.

How Bright

Moon
756 1.0
star
1.0
celestial body
  • Specialized
5 4.4
planet
1.0
comet
390 4.3
asteroid
314 5.0

Surface Forms

comet singular
comets plural

Etymology

Comet comes from the Greek kometes, from kome meaning 'hair'. Ancient people called it a 'hairy' star because the bright tail looks like long hair, which is why a comet today is the icy space object often seen with a long tail.