Definition of comet in English:

comet

noun ˈkɒmɪtˈkɑmət

A celestial object consisting of a nucleus of ice and dust and, when near the sun, a ‘tail’ of gas and dust particles pointing away from the sun.
彗星
Example sentencesExamples
- He observed the comets of 1665, and made other astronomical observations, publishing his descriptions of these events.
- The Hawaii researchers observed the comet on July 17 and July 18 and discovered many more fragments.
- The spacecraft's point of view now captures the shadowed side of the comet's nucleus.
- A comet is discovered and as it comes closer to earth, it becomes apparent it may strike our planet.
- She discovered eight comets, a record by a female astronomer until 1987.
- Bombardment by asteroids and comets is an extraterrestrial process that may release huge quantities of water.
- There are vast numbers of comets in the solar system, more than there are asteroids, but most lie out of sight beyond Pluto.
- Some explanations for extinctions and evolution include strikes by asteroids or comets.
- Sometimes, the stresses are strong enough to break off chunks of the comet's nucleus.
- Rather, they are produced by bits of dusty debris shed by orbiting comets and asteroids.
- The spacecraft will orbit the comet's nucleus.
- We have just discussed some of the positive benefits of planetary impact by comets and asteroids.
- A bright comet is a spectacular astronomical event.
- He saw a comet passing far, far away in the distance from where he made his steps.
- Several bright comets streaked across the sky and then disappeared in an instant.
- In particular he showed that comets have a solid nucleus, and that they generate their own light.
- Dozens of comets are discovered each year as well, many by automated telescopes and spacecraft.
- As orbiting comets pass near the sun, intense heat strips them of a layer of dust and ice.
- Warming from the sun causes frozen organic compounds on a comet's surface to sublime, or vaporize.
- A bright comet had appeared on 14 November 1680.

Originating in the remotest regions of the solar system, most comets follow regular eccentric orbits and appear in the inner solar system as periodic comets, some of which break up and can be the origin of annual meteor showers. They were formerly considered to be supernatural omens

Derivatives

cometary

adjective ˈkɒmɪtəriˈkɑməˌtɛri

At a distance of one light-week, our solar system is lost in the Sun's glare; even farther out is a collection of cometary objects called the Oort Cloud, depicted as a sphere one light year across.
Example sentencesExamples
- By studying meteor showers, scientists can learn more about cometary debris, but it is going a step further with its Rosetta comet-chasing mission which will examine a comet at close range.
- The Hubble Space Telescope captured a picture of starlit asteroidal and cometary debris encircling the yellow dwarf star HD 107146.
- Such uncertainties make it impossible to predict the mechanical properties of cometary material and the way a comet nucleus would react to a ‘nudge’ to change its trajectory.
- Ease of accessibility is itself a natural resource and opens up the economic possibility of efficient exportation of asteroidal or cometary natural resources to Earth and other exploration targets.

Origin

Late Old English, from Latin cometa, from Greek komētēs 'long-haired (star)', from komē 'hair'; reinforced by Old French comete.

We get the word comet from Greek komētēs ‘long-haired’. The ancient Greeks gazed into the night sky and observed a comet's long tail. To their eyes it resembled streaming hair, hence their name for what they called ‘the long-haired star’.

Rhymes

grommet, vomit

Definition of comet in US English:

comet

nounˈkämətˈkɑmət

A celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
彗星
Originating in the remotest regions of the solar system, most comets follow regular eccentric orbits and appear in the inner solar system as periodic comets, some of which break up and can be the origin of annual meteor showers. They were formerly considered to be supernatural omens
Example sentencesExamples
- The Hawaii researchers observed the comet on July 17 and July 18 and discovered many more fragments.
- A comet is discovered and as it comes closer to earth, it becomes apparent it may strike our planet.
- A bright comet is a spectacular astronomical event.
- As orbiting comets pass near the sun, intense heat strips them of a layer of dust and ice.
- Rather, they are produced by bits of dusty debris shed by orbiting comets and asteroids.
- Several bright comets streaked across the sky and then disappeared in an instant.
- Bombardment by asteroids and comets is an extraterrestrial process that may release huge quantities of water.
- Warming from the sun causes frozen organic compounds on a comet's surface to sublime, or vaporize.
- Sometimes, the stresses are strong enough to break off chunks of the comet's nucleus.
- She discovered eight comets, a record by a female astronomer until 1987.
- A bright comet had appeared on 14 November 1680.
- He saw a comet passing far, far away in the distance from where he made his steps.
- Dozens of comets are discovered each year as well, many by automated telescopes and spacecraft.
- The spacecraft's point of view now captures the shadowed side of the comet's nucleus.
- There are vast numbers of comets in the solar system, more than there are asteroids, but most lie out of sight beyond Pluto.
- He observed the comets of 1665, and made other astronomical observations, publishing his descriptions of these events.
- We have just discussed some of the positive benefits of planetary impact by comets and asteroids.
- The spacecraft will orbit the comet's nucleus.
- In particular he showed that comets have a solid nucleus, and that they generate their own light.
- Some explanations for extinctions and evolution include strikes by asteroids or comets.

Origin

Late Old English, from Latin cometa, from Greek komētēs ‘long-haired (star)’, from komē ‘hair’; reinforced by Old French comete.

词汇	comet
释义	Definition of comet in English: comet noun ˈkɒmɪtˈkɑmət A celestial object consisting of a nucleus of ice and dust and, when near the sun, a ‘tail’ of gas and dust particles pointing away from the sun. 彗星 Example sentencesExamples He observed the comets of 1665, and made other astronomical observations, publishing his descriptions of these events. The Hawaii researchers observed the comet on July 17 and July 18 and discovered many more fragments. The spacecraft's point of view now captures the shadowed side of the comet's nucleus. A comet is discovered and as it comes closer to earth, it becomes apparent it may strike our planet. She discovered eight comets, a record by a female astronomer until 1987. Bombardment by asteroids and comets is an extraterrestrial process that may release huge quantities of water. There are vast numbers of comets in the solar system, more than there are asteroids, but most lie out of sight beyond Pluto. Some explanations for extinctions and evolution include strikes by asteroids or comets. Sometimes, the stresses are strong enough to break off chunks of the comet's nucleus. Rather, they are produced by bits of dusty debris shed by orbiting comets and asteroids. The spacecraft will orbit the comet's nucleus. We have just discussed some of the positive benefits of planetary impact by comets and asteroids. A bright comet is a spectacular astronomical event. He saw a comet passing far, far away in the distance from where he made his steps. Several bright comets streaked across the sky and then disappeared in an instant. In particular he showed that comets have a solid nucleus, and that they generate their own light. Dozens of comets are discovered each year as well, many by automated telescopes and spacecraft. As orbiting comets pass near the sun, intense heat strips them of a layer of dust and ice. Warming from the sun causes frozen organic compounds on a comet's surface to sublime, or vaporize. A bright comet had appeared on 14 November 1680. Originating in the remotest regions of the solar system, most comets follow regular eccentric orbits and appear in the inner solar system as periodic comets, some of which break up and can be the origin of annual meteor showers. They were formerly considered to be supernatural omens Derivatives cometary adjective ˈkɒmɪtəriˈkɑməˌtɛri At a distance of one light-week, our solar system is lost in the Sun's glare; even farther out is a collection of cometary objects called the Oort Cloud, depicted as a sphere one light year across. Example sentencesExamples By studying meteor showers, scientists can learn more about cometary debris, but it is going a step further with its Rosetta comet-chasing mission which will examine a comet at close range. The Hubble Space Telescope captured a picture of starlit asteroidal and cometary debris encircling the yellow dwarf star HD 107146. Such uncertainties make it impossible to predict the mechanical properties of cometary material and the way a comet nucleus would react to a ‘nudge’ to change its trajectory. Ease of accessibility is itself a natural resource and opens up the economic possibility of efficient exportation of asteroidal or cometary natural resources to Earth and other exploration targets. Origin Late Old English, from Latin cometa, from Greek komētēs 'long-haired (star)', from komē 'hair'; reinforced by Old French comete. We get the word comet from Greek komētēs ‘long-haired’. The ancient Greeks gazed into the night sky and observed a comet's long tail. To their eyes it resembled streaming hair, hence their name for what they called ‘the long-haired star’. Rhymes grommet, vomit Definition of comet in US English: comet nounˈkämətˈkɑmət A celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun. 彗星 Originating in the remotest regions of the solar system, most comets follow regular eccentric orbits and appear in the inner solar system as periodic comets, some of which break up and can be the origin of annual meteor showers. They were formerly considered to be supernatural omens Example sentencesExamples The Hawaii researchers observed the comet on July 17 and July 18 and discovered many more fragments. A comet is discovered and as it comes closer to earth, it becomes apparent it may strike our planet. A bright comet is a spectacular astronomical event. As orbiting comets pass near the sun, intense heat strips them of a layer of dust and ice. Rather, they are produced by bits of dusty debris shed by orbiting comets and asteroids. Several bright comets streaked across the sky and then disappeared in an instant. Bombardment by asteroids and comets is an extraterrestrial process that may release huge quantities of water. Warming from the sun causes frozen organic compounds on a comet's surface to sublime, or vaporize. Sometimes, the stresses are strong enough to break off chunks of the comet's nucleus. She discovered eight comets, a record by a female astronomer until 1987. A bright comet had appeared on 14 November 1680. He saw a comet passing far, far away in the distance from where he made his steps. Dozens of comets are discovered each year as well, many by automated telescopes and spacecraft. The spacecraft's point of view now captures the shadowed side of the comet's nucleus. There are vast numbers of comets in the solar system, more than there are asteroids, but most lie out of sight beyond Pluto. He observed the comets of 1665, and made other astronomical observations, publishing his descriptions of these events. We have just discussed some of the positive benefits of planetary impact by comets and asteroids. The spacecraft will orbit the comet's nucleus. In particular he showed that comets have a solid nucleus, and that they generate their own light. Some explanations for extinctions and evolution include strikes by asteroids or comets. Origin Late Old English, from Latin cometa, from Greek komētēs ‘long-haired (star)’, from komē ‘hair’; reinforced by Old French comete.
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