Definition of dark nebula in English:

dark nebula

noun

Astronomy

A non-luminous nebula of dust and gas that is observable because it obscures light from other sources.
〔天文〕暗星云
Example sentencesExamples
- In the inner regions of dark nebulae important events take place, such as the formation of stars and masers.
- For nebulas there are emission nebula, reflection nebulas, planetary nebulas, dark nebulas and supernova remnants.
- These dark nebulas are places where new stars are beginning their gravitational collapse and have yet to begin nuclear fusion.
- There are different forms of nebulas, dark nebulas, emission nebulas and celestial nebulas.
- Both dark nebulas and luminous nebulas are considered likely sites for the processes of dust-cloud condensation and the formation of new stars.
- In the Cigar Galaxy, there are blank spots where it appears there are not any stars, just dark nebulas.

Definition of dark nebula in US English:

dark nebula

noun

Astronomy

A nonluminous nebula of dust and gas that is observable because it obscures light from other sources.
〔天文〕暗星云
Example sentencesExamples
- In the inner regions of dark nebulae important events take place, such as the formation of stars and masers.
- There are different forms of nebulas, dark nebulas, emission nebulas and celestial nebulas.
- For nebulas there are emission nebula, reflection nebulas, planetary nebulas, dark nebulas and supernova remnants.
- In the Cigar Galaxy, there are blank spots where it appears there are not any stars, just dark nebulas.
- Both dark nebulas and luminous nebulas are considered likely sites for the processes of dust-cloud condensation and the formation of new stars.
- These dark nebulas are places where new stars are beginning their gravitational collapse and have yet to begin nuclear fusion.

单词	dark nebula
释义	Definition of dark nebula in English: dark nebula noun Astronomy A non-luminous nebula of dust and gas that is observable because it obscures light from other sources. 〔天文〕暗星云 Example sentencesExamples In the inner regions of dark nebulae important events take place, such as the formation of stars and masers. For nebulas there are emission nebula, reflection nebulas, planetary nebulas, dark nebulas and supernova remnants. These dark nebulas are places where new stars are beginning their gravitational collapse and have yet to begin nuclear fusion. There are different forms of nebulas, dark nebulas, emission nebulas and celestial nebulas. Both dark nebulas and luminous nebulas are considered likely sites for the processes of dust-cloud condensation and the formation of new stars. In the Cigar Galaxy, there are blank spots where it appears there are not any stars, just dark nebulas. Definition of dark nebula in US English: dark nebula noun Astronomy A nonluminous nebula of dust and gas that is observable because it obscures light from other sources. 〔天文〕暗星云 Example sentencesExamples In the inner regions of dark nebulae important events take place, such as the formation of stars and masers. There are different forms of nebulas, dark nebulas, emission nebulas and celestial nebulas. For nebulas there are emission nebula, reflection nebulas, planetary nebulas, dark nebulas and supernova remnants. In the Cigar Galaxy, there are blank spots where it appears there are not any stars, just dark nebulas. Both dark nebulas and luminous nebulas are considered likely sites for the processes of dust-cloud condensation and the formation of new stars. These dark nebulas are places where new stars are beginning their gravitational collapse and have yet to begin nuclear fusion.
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