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spiral nebula

noun, Astronomy.
(formerly) a spiral galaxy. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for spiral nebula
Historical Examples
  • Such, then, is the mechanism of the first phase in the history of a spiral nebula according to the Planetesimal Hypothesis.

    Curiosities of the Sky Garrett Serviss
  • Whereas, next to the star itself, the spiral nebula is the type object which occurs most frequently.

    Astronomy David Todd
  • In the centre of a spiral nebula is seen a mass both more luminous and more resolvable than the rest.

  • The spiral nebula is evidently the standard type, and the condensing nebula must conform to it.

    The Story of Evolution Joseph McCabe
  • If we accept this theory, the origin of the spiral nebula becomes intelligible.

    The Story of Evolution Joseph McCabe
  • In any case, we have here a good suggestion of the origin of the spiral nebula and of its further development.

    The Story of Evolution Joseph McCabe
  • The most interesting specimen of a spiral nebula is situated in Canes Venatici.

  • Around and around they would whirl in a spiral nebula, till one got a head start on a race for home and mother.


    Allen Chaffee
  • The hypothesis, therefore, that our universe is a spiral nebula has much to be said for it.

  • It is even suggested that the spiral nebula 162 originated by disruption of one star by a swift-moving passing star.

    Geology William J. Miller

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