Messier 43 (also known as M43, De Mairan’s Nebula, and NGC 1982) is an H II region in the Orion constellation. It was discovered by Jean-Jacques Dortous de Mairan before 1731. The De Mairan’s Nebula is part of the Orion Nebula, separated from the main nebula by a lane of dust. It is part of the much larger Orion Molecular Cloud Complex. Found at http://buff.ly/1jCfHEA
via Tumblr http://joshuastarlight.tumblr.com/post/68079313907/messier-43-also-known-as-m43-de-mairans-nebula
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