![]() ![]() ![]() The Horsehead appears silhouetted against it. IC 434 is an active star-forming region located approximately 1,500 light-years away. The dark nebula appears along the edge of the large emission nebula IC 434. Its unusual shape and the colourful surroundings of the Orion’s Belt region make it a favourite for amateur astronomers. The Horsehead Nebula is one of the most popular astrophotography targets in the sky. Image: ESO and Digitized Sky Survey 2 (CC BY 4.0) The field of view is approximately three degrees. It was created from photographs in red and blue light forming part of the Digitized Sky Survey 2. The whole image is filled with glowing gas clouds illuminated by hot blue young stars. This spectacular visible light wide-field view of part of the famous belt of the great celestial hunter Orion shows the region of the sky around the Flame Nebula. The hot blue supergiant is located in the foreground and is not related to the Horsehead. The brighter star visible in this area of the sky in images is Alnitak (Zeta Orionis), the easternmost star of the Belt of Orion. ![]() The stars are less than 2 million years old. The brightest components are over 10 times more massive than the Sun and destined to go out as supernovae when they reach the end of their short life cycles. Image credit: T.A.Rector (NOIRLab/NSF/AURA) and Hubble Heritage Team (STScI/AURA/NASA)Sigma Orionis is a multiple star system composed of exceptionally hot stars of the spectral types O, B, and A. This false-color image was created by combining emission-line images taken in hydrogen-alpha (red), oxygen (green) and sulfur (blue). Located in the constellation of Orion, the Hunter, the Horsehead is part of a dense cloud of gas in front of an active star-forming nebula known as IC434. This exceptional image of the Horsehead nebula was taken at the National Science Foundation’s 0.9-meter telescope on Kitt Peak with the NOAO Mosaic CCD camera. ![]()
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