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Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

See Explanation. Clicking on the picture will download the highest resolution version available.

Wisps Surrounding the Horsehead Nebula

Explanation: The famous Horsehead Nebula in Orion is not alone. A deep exposure shows that the dark familiar shaped indentation, visible just below center, is part of a vast complex of absorbing dust and glowing gas . To bring out details of the Horse head's pasture, amateur astronomers at the Star Shadow Remote Observatory in New Mexico , USA fixed a small telescope on the region for over seven hours filtering out all but a very specific color of red light emitted by hydrogen . They then added the image to a full color frame taken over three hours. The resulting spectacular picture details an intricate tapestry of gaseous wisps and dust-laden filaments that were created and sculpted over eons by stellar winds and ancient supernovas . The Horsehead Nebula lies 1,500 light years distant towards the constellation of Orion . Two stars from the Orion's Belt can be found in the above image .

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Date September 9, 2012
Credit Image Credit & Copyright: Star Shadows Remote Observatory
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.