Greenberg, J. Mayo
Astronomers no longer consider interstellar dust a nuisance. Rather it is a major source of information about the birth of stars, planets and comets, and it may even hold clues to the origin of life itself.
Scientific American The Secrets of Stardust (p. 75) Volume 283, Number 6, December 2000
Undoubtedly one of the greatest difficulties, if not the greatest of all, in the way of obtaining an understanding of the real distribution of the stars in space, lies in our uncertainty about the amount of loss suffered by the light on its way to the observer.
The Astrophysical Journal On the Absorption of Light in Space (p. 46) Volume 29, Number 1, January 1909
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