a planetary nebula in the constellation Lyra that has a ringlike appearance surrounding its central star.
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How to use Ring Nebula in a sentence
Nor do I venture to say what ages must elapse ere the terminus at the other side of the Ring Nebula would be reached.Young Folks' Library, Volume XI (of 20) | Various
The most remarkable object of this class is the Ring Nebula, which is situated between the stars β and γ Lyr.The Astronomy of Milton's 'Paradise Lost' | Thomas Orchard
Were the Ring Nebula in Lyra composed of this material, we could not see it.Young Folks' Library, Volume XI (of 20) | Various