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Back Cosmic Silhouettes give Rare Glimpse of Galaxies' Dust

Cosmic Silhouettes give Rare Glimpse of Galaxies' Dust


Depicts: AM0500-620
Copyright: W.C. Keel, R.E. White III (University of Alabama) and NASA

The amount of dust in typical galaxies, and its effect on what we see, has been a topic of controversy since a 1990 paper by Edwin Valentijn challenged the long-held view that galaxies are basically transparent. Valentijn used statistical evidence from galaxy catalogs to suggest that most galaxies are virtually opaque.
Last Update: 1 September 2019
16-Mar-2026 05:19 UT

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