Barnard 33, the Horsehead Nebula Dark Nebula Barnard 33 in Orion The Horsehead Nebula Right Ascension 05 : 40.9 (h:m) Declination -02 : 28 (deg:m) Distance 1.6 (kly) Apparent Dimension 6x4 (arc min) E. Pickering detected IC 434 photographically in 1889, the Horsehead can be detected on a photo made on January 25, 1900 by Isaac Roberts (Roberts 1902). E.E. Barnard recognized the object in the ...

Astronomy Picture of the Day Index - Nebulae: Dark Nebulae | Today's APOD | Title Search | Text Search | Editor's choices for the most educational Astronomy Pictures of the Day about dark nebulae: APOD: 1999 May 19 - M31: The Horsehead Nebula Explanation: One of the most identifiable nebulae in the sky, the Horsehead Nebula in Orion, is part of a large, dark, molecular cloud. Also known as ...

Dark Nebulae Sometimes known as absorption nebulae these are dark concentrations of gas and dust which often have stars forming inside them. Dark nebulae can be seen if they obscure part of a bright nebula (eg. the Horsehead nebula) or if they block out background stars (eg. the Coalsack). The Horsehead Nebula Here is a map showing many of the dark nebula regions within 2000 light years plotted ...