W43 Region
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W43 Region

March 31, 2003
Atlas Image mosaic, covering 11´ × 11´ on the sky of W43, which is one of the giant HII, or ionized hydrogen, regions in the Milky Way Galaxy. The gas is ionized by a cluster of dozens of hot, young, massive stars, similar to the conditions in NGC 3603. However, unlike NGC 3603, W43 is completely obscured visually. 2MASS reveals the nebula and stars in this image. 2001 July 18-31

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