page_title: Orion complex
hierarchical_section_title: Orion complex
caption_attribution_description: English: Photo taken by Rogelio Bernal Andreo in October 2010 of the Orion constellation showing the surrounding nebulas of the Orion Molecular Cloud complex. Also captured is the red supergiant Betelgeuse (top left) and the famous belt of Orion composed of the OB stars Alnitak, Alnilam and Mintaka. To the bottom right can be found the star Rigel. The red crescent shape is Barnard's Loop. The photograph appeared as the Astronomy Picture of the Day on October 23, 2010.
context_page_description: The Orion complex is a huge star-forming area in the constellation of Orion.
  It is a large group of bright nebulae, dark clouds, and young star clusters. The cloud is between 1,500 and 1,600 light-years away and is hundreds of light-years across. Several parts of the nebula can be seen through binoculars and small telescopes. Some parts are visible to the naked eye.
  The nebula is important because of its sheer size. It is also one of the most active regions of stellar formation that can be seen in the night sky. In it are protoplanetary discs and many very young stars. The nebula is very bright in the infrared wavelengths due to the heat-intensive processes involved in star formation. The complex contains dark nebulae, emission nebulae, reflection nebulae, and HII regions.
context_section_description: The Orion complex (sometimes called the Orion  molecular cloud complex) is a huge star-forming area in the constellation of Orion.  
  It is a large group of bright nebulae, dark clouds, and young star clusters. The cloud is between 1,500 and 1,600 light-years away and is hundreds of light-years across. Several parts of the nebula can be seen through binoculars and small telescopes. Some parts (such as the Orion nebula) are visible to the naked eye.
  The nebula is important because of its sheer size. It is also one of the most active regions of stellar formation that can be seen in the night sky. In it are protoplanetary discs and many very young stars.  The nebula is very bright in the infrared wavelengths due to the heat-intensive processes involved in star formation. The complex contains dark nebulae, emission nebulae, reflection nebulae, and HII regions.
caption: Part of the Orion complex. It shows the Orion nebula near the centre, with the Belt of Orion, and Barnard's Loop curling around the image
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