The Coalsack Nebula (Southern Coalsack, or simply the Coalsack) is a dark nebula, which is visible to the naked eye as a dark patch obscuring part of the Milky Way east of Acrux (Alpha Crucis) in the constellation of Crux. == General information == Historically any other dark cloud in the night sky was called coalsack.
The Coalsack Nebula (Southern Coalsack, or simply the Coalsack) is a dark nebula, which is visible to the naked eye as a dark patch obscuring part of the Milky Way east of Acrux (Alpha Crucis) in the constellation of Crux. == General information == Historically any other dark cloud in the night sky was called coalsack.
Source: Wikipedia "Coalsack Nebula" · CC BY-SA 4.0
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