dark nebula

dark nebula
a cloud of interstellar gas and dust that absorbs and thus obscures the light from stars behind it, appearing as a dark patch in front of a bright nebula or in an otherwise bright area of sky. Also called absorption nebula.
[1930-35]

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      interstellar dust and gas concentrated sufficiently to produce conspicuous obscuring of the stars beyond (see nebula).

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Universalium. 2010.

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