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Lagoon Nebula without Stars
The Lagoon Nebula, or M8, is star-forming region, but the stellar point sources were removed here by computer processing to leave only the diffuse emission from the glowing gas clouds. Click here to see the image with stars. Red emission (H-alpha emission) from atomic hydrogen dominates the cosmic lagoon's visible light, but narrow band filters were used to record the image data and map the hydrogen emission to green hues, with emission from sulfur atoms in red and oxygen in blue. The lovely Lagoon Nebula spans about 30 light-years at an estimated distance of 5,000 light-years toward the constellation Sagittarius.