Orion A

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Orion A [ə‚rī·ən ′ā]

(astronomy)

A giant molecular cloud, 100,000 times more massive than the sun, mostly made of molecular hydrogen but best traced in the 2.6-millimeter emission line of¹³CO, the rarer isotopic variant of carbon monoxide; the Orion Nebula is located in front of its northern part.

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No references found			origin of rifling Origin of Species Origin of Species, The Origin of the Family, Private Property, and the State, The origin of the trajectory origin server Original original construction original dip original document original duration Original Equipment Manufacturer Original Gullah Festival original interstice original lean-to original sin original valley Orillia orillon Orin-Nur Orinoco Orinoco River Oriol, Father Oriole Orion Orion A Orion arm Orion B Orion molecular clouds Orion Nebula Orion OB association Orion spur Orionids ORiordan, Michael Oriskany Battlefield State Historic Site Orissa Oriya Oriya Literature Orizaba Orkan, Wladyslaw Orkhan Orkhon Orkhon Turks Orkhon-Enisei Inscriptions ORKID Orkla Orkney Islands Orkut Orlando Orlando Di Lasso Orlando Furioso			Orinoco Orinoco Orinoco Mining Company Orinoco River Orinoco River Orinoco tobacco Orinoco tobacco Orinoquia Orinoquia ORINS ORINST Orio ORIOH Oriol Oriol, Father oriole oriole Oriole Park at Camden Yards Orioles Orioles Orioles Oriolidae Oriolus Oriolus Oriolus oriolus Orion Orion Orion Orion (disambiguation) Orion (disambiguation) Orion A Orion Arm Orion B Orion Bus Industries Orion Display Technology Orion Grassroots Network Orion Group Software Engineers Orion laser system Orion Marine Group Inc Orion Metal Trading Corporation Orion molecular cloud Orion molecular clouds Orion Nebula Orion Nebula Cluster Orion Network Systems, Inc Orion OB association Orion Remote Method Invocation Orion School and Foundation for Astrology Orion Spur Orion String Quartet Orion Township Public Library Orion Virtual Power Plant Orionid meteor shower Orionids Orions Orions Orions

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