Abstract
BEFORE the announcement of Mr. Huggins's discovery of the presence of bright lines in the spectra of nebulæ, it was generally, if not universally, accepted as a fact that nebulae were merely stellar clusters irresolvable on account of their great distances from us. This view had become impressed on the minds of many of our greatest observing astronomers in the progress of their work, and is one therefore which should not lightly be abandoned.
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The Nebulæ—What are They? 1 . Nature 15, 550 (1877). https://doi.org/10.1038/015550a0
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DOI: https://doi.org/10.1038/015550a0