... Two Tails of Comet Lulin . ... From a dark location, you should need only a good star map and admirable perseverance -- although wide-field binoculars might help. ... Although hard to make out above, the famous Horsehead Nebula is the slight dark indentation in the bright streak just to the left of the image center. Glowing like an emission nebula, the origin of the bubble, known as Barnard's Loop, is currently unknown. ... Orion Nebula: The Hubble View . ... The Swift View of Comet Lulin . ...