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Definition of dark nebula in English: dark nebulanoun Astronomy A non-luminous nebula of dust and gas that is observable because it obscures light from other sources. 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 nebulanoun Astronomy A nonluminous nebula of dust and gas that is observable because it obscures light from other sources. 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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