Title:[0097] S Monocerotis and NGC 2264 Caption:Some of the smallest wispy tendrils seen here are Herbig-Haro objects, jets of matter ejected from newly-formed stars still hidden inside the nebula that fills this picture. The nebula itself is associated with the bright star S Monocerotis and is complex mixture of vivid red hydrogen gas and dark obscuring dust lanes that are typical of star-forming regions. Some dust patches are close enough to bright stars to reflect light from them; these appear blue for the same reason that the daytime sky is blue—because some of the interstellar particles preferentially scatter blue light. Copyright:(c) 1981 Anglo-Australian Telescope Board, photograph by David Malin Credit:D. F. Malin

Title:[0531] Corona Australis reflection nebula, NGC 6726-7 Caption:This spectacular reflection nebula is the result of a few bright stars caught up in a large, dusty cloud. The peculiar yellowish curved streak near the two bright reflection nebulae seems to be the source of two compact but distinctly red patches, which are Herbig-Haro objects, often the first visible signs of star formation occurring deep inside dark clouds. These compact nebulae are ejected from proto-stars during the later stages of star formation and sometimes appear in pairs, moving in opposite directions from the hidden star-forming region. Copyright:(c) 1992 Anglo-Australian Telescope Board, photograph by David Malin Credit: