Visible to the unaided eye as a fuzzy patch in the constellation of Orion , this image taken with the Big Throughput Camera shows the Orion Nebula to be a busy neighborhood of young stars, hot gas, and dark dust. The eerie blue glow surrounding the bright stars pictured here is their own starlight reflected by nearby dust . Hot oxygen and hydrogen gases cause the extended green and pink glows, respectively. Dark brown dust filaments cover much of the region . The whole Orion Nebula cloud complex, which includes the Horsehead Nebula , will slowly disperse over the next 100,000 years.
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