Which type of nebula is mentioned as potentially showing hints of distinct color visually under good conditions?
Answer
The Ring Nebula ($ ext{M}57$)
The text specifies that the observer might see hints of color in the brightest, densest planetary nebulae, specifically mentioning the distinct blue-green of $ ext{NGC }3242$ or the green of the Ring Nebula ($ ext{M}57$). Extended, fainter clouds remain monochromatic.
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Understanding Nebulae And Their Colors - YouTube
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