Abstract
I. I.—PROBABLE ORIGIN OF SOME OF THE GROUPS, I. NEBULÆ.IN a paper communicated to the Royal Society on November 15, 1887, I showed that the nebulæ are composed of sparse meteorites, the collisions of which bring about a rise of temperature sufficient to render luminous one of their chief constituents—magnesium. This conclusion was arrived at from the facts that the chief nebula lines are coincident in position with the fluting and lines visible in the bunsen burner when magnesium is introduced, and that the fluting is far brighter at that temperature than almost any other spectral line or fluting of any element whatever.
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Suggestions on the Classification of the Various Species of Heavenly Bodies 1 . Nature 37, 585–590 (1888). https://doi.org/10.1038/037585c0
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DOI: https://doi.org/10.1038/037585c0