emission nebula
collocation in Englishmeaningsofemissionandnebula
These words are often used together. Click on the links below to explore the meanings. Or,see other collocations withnebulaoremission.
emission
noun
uk/iˈmɪʃ.ən/us/iˈmɪʃ.ən/
the act of sending out gas, heat, ...
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nebula
noun[C]
uk/ˈneb.jə.lə/us/ˈneb.jə.lə/
a cloud of gas or dust in space, appearing either bright ...
See more atnebula
(Definition ofemissionandnebulafrom theCambridge English Dictionary© Cambridge University Press)
Examplesofemission nebula
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
This is anemissionnebulashowing glowing gas and darker dust lanes.
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Wikipedia
N44 is classified as anemissionnebulabecause it contains large regions of ionized hydrogen.
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Wikipedia
For many years, well into the 1960s, it was thought to be a brightemissionnebula.
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The gaseous contortions of thisemissionnebulabear a resemblance to a pelican, giving rise to its name.
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Sharpless 2115 is anotheremissionnebulawith a complex pattern of light and dark patches.
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In many emission nebulae, an entire cluster of young stars is doing the work.
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Not all emission nebulae are found around or near stars where solar heating causes ionisation.
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Reflection nebulae and emission nebulae are often seen together and are sometimes both referred to as diffuse nebulae.
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For astrophotography, many photogenic targets (such as emission nebulae) are bright in the far red and near infrared.
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Emission nebulae often have dark areas in them which result from clouds of dust which block the light.
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Most emission nebulae are about 90% hydrogen, with the remainder helium, oxygen, nitrogen, and other elements.
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It is very difficult to observe visually because its low surface brightness makes it appear dimmer than most other emission nebulae.
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Wikipedia
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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