Backlit wisps along the Horsehead Nebula's upper ridge are being illuminated by Sigma Orionis, a young five-star system just off the top of this image

• Contributor: LWM/NASA / Alamy Stock Photo
• Image ID: RTGREW
• File size: 52.7 MB (2.1 MB Compressed download)
• Releases: Model - no | Property - no
• Dimensions: 4200 x 4389 px | 35.6 x 37.2 cm | 14 x 14.6 inches | 300dpi
• Date taken: 19 April 2013

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Backlit wisps along the Horsehead Nebula's 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.