Ring Nebula

noun

, Astronomy.

a planetary nebula in the constellation Lyra that has a ringlike appearance surrounding its central star.

Nor do I venture to say what ages must elapse ere the terminus at the other side of the ring nebula would be reached.

The most remarkable object of this class is the Ring Nebula, which is situated between the stars β and γ Lyr.

Were the ring nebula in Lyra composed of this material, we could not see it.

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