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Home Q & A Board Science-Related Homework Help Physics
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barry barry
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10 years ago
Explain the colors of emission nebulae.
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10 years ago
"Emission nebulae tend to be red in color because of the abundance of hydrogen. Additional colors, such as blue and green, can be produced by the atoms of other elements, but hydrogen is almost always the most abundant."
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10 years ago
The predominant bright red is the emission from ionized hydrogen, heated to over 3,000 K by the ultraviolet radiation of imbedded O and B type stars.  Other colors come from emission lines of other atoms. Some blue light will be scattered by cooler dust particles as well.
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barry Authorbarry
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10 years ago
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