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Galloping Nebula
Featured on January 8, 2011
The Horsehead Nebula is a giant cloud of dust that forms a dark outline against a background cloud of glowing gas. Recent research found that the nebula is twisting. Without that motion, the cloud would not resemble a horse's head. The nebula is in Orion, the hunter, not far from Orion's Belt. [N.A.Sharp/NOAO/AURA/NSF]
