Coalsack

or Coal Sack

[ kohl-sak ]

noun

, Astronomy.

1. a dark nebula in the southern constellation Crux, whose dust particles obscure light from Milky Way stars behind it.

Word History and Origins

Origin of Coalsack¹

First recorded in 1625–35; coal + sack ¹

Example Sentences

Just east of Crux lies what appears to be a hole in the sky—a dark region devoid of stars known as the Coalsack Nebula.

From National Geographic

Presently it would take off for Krim, Darth, and the Coalsack Stars, and if Hoddan was lucky he would be on it.

From Project Gutenberg

But one knew that it was going on to Lohala and Tralee and Famagusta and the Coalsack Stars.

From Project Gutenberg

But the Coalsack area was a space-mark good for half a sector of the galaxy.

From Project Gutenberg

And then they'd go on, faithfully leaving similar letters and similar impressions on Krim, and Lohala, and Tralee, and Famagusta, and throughout the Coalsack stars until the stock of addressed missives ran out.

From Project Gutenberg