Abstract
The Planetary Nebulae. Prof. H. N. Russell has published an article on these nebul¦ in the Scientific American for July. He complains that the name planetary is unsuitable, but, it seems, without sufficient reason. The photograph of the Owl nebula that is reproduced bears a decided resemblance to Mars when slightly gibbous.
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Astronomical Topics. Nature 132, 213 (1933). https://doi.org/10.1038/132213a0
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DOI: https://doi.org/10.1038/132213a0