"Dark shapes with bright edges winging their way through dusty NGC 6188 are tens of light-years long. The emission nebula is found near the edge of an otherwise dark large molecular cloud in the southern constellation Ara, about 4,000 light-years away." Awesome space photography full of blue, cyan, red, magenta, fuchsia ...and really a billion other colors.
NGC 2818 It may look like a seahorse, but the dark object is actually a pillar of smoky dust about 20 light-years long. The structure occurs in our neighbouring Large Magellanic Cloud, in a star-forming region near the Tarantula Nebula.
Celestial Fireworks - Hubble by Deep Space Photography - Resembling the puffs of smoke and sparks from a summer fireworks display in this image from NASA's Hubble Space Telescope, these delicate filaments are actually sheets of debris from a stellar explosion in a neighboring galaxy.