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Horsehead Nebula

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This mosaic image taken by NASA Wide-field Infrared Survey Explorer, features three nebulae that are part of the giant Orion Molecular Cloud. Included in this view are the Flame nebula, the Horsehead nebula and NGC 2023.
The famous Horsehead nebula takes on a ghostly appearance in this image from NASA Spitzer Space Telescope, released on December 18, 2014.
Backlit wisps along the Horsehead Nebula upper ridge are being illuminated by Sigma Orionis, a young five-star system just off the top of this image from the Hubble Space Telescope.
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