Orion A

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 of 13CO, the rarer isotopic variant of carbon monoxide; the Orion Nebula is located in front of its northern part.
References in periodicals archive ?
Astronomers have, using the Visible and Infrared Survey Telescope for Astronomy (VISTA) at the European Southern Observatory's (ESO) Paranal Observatory in Chile, captured a stunning new image of the Orion A molecular cloud.
This impressively detailed image of Orion A establishes a new observational foundation for further studies of star and cluster formation and once again highlights the power of the VISTA telescope to image wide areas of sky quickly and deeply in the near-infrared part of the spectrum," the ESO said in a (http://www.
Orion A is one of the two ginormous molecular clouds in the Orion Molecular Cloud Complex - a region that stretches from Orion's "belt" to the "sword.
PLANETS IN THE MAKING While O'Dell and his colleagues look at Orion as a whole, other astronomers are zooming in on specific regions within the nursery.