Evening Republican, Volume 17, Number 288, Rensselaer, Jasper County, 3 December 1913 — Dark Space Among the Stars. [ARTICLE]

Dark Space Among the Stars.

Absolutely dark spaces among the stars have puzzled astronomers since the time of Herschel. In Milky Way pnotographs. Dr. Kopff has noticed an almost complete absence of faint stars immediately around certain nebulae, v/ith an abundance of such stars within the nebulae and far outside. A late suggestion by Dr. Espin is that the margins of such nebulae may be too diffuse to become Illuminated and yet dense enough to absorb light. If such an assumption be made, he finds that it explains not only the blank surrounding spaces but the dark holes and lanes within the bright nebulae.