Jones, H. Spencer (Harold Spencer), 1890- · London E. Arnold & co. · leaf 416
THE STELLAR UNIVERSE 363 the spectra of the WoK-Rayet stars and, like the latter, theyoccur almost exclusively in the Milky Way. (3) Spiral Nebulce.—These constitute by far the most numer-ous class. Their discovery was the one striking achievementof the great Parsonstown reflector, constructed by…
Astronomy
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