Dark Nebulae
Horsehead Nebula
Image from Steve Bowers
Generic term for non-glowing nebula. These are concentrations of dust only visible if they block out the light of stars that lie behind them. Many dark nebula have already been claimed by hider and cloudharvesting civilizations
Bok Globule Coal Sack
Images from Steve Bowers, NASA
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Development Notes
Text by M. Alan Kazlev

Initially published on 09 October 2001.