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Last updated on April 17, 2014 at 16:09 EDT
Galaxy W 51
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Galaxy W 51

March 31, 2003
This 1°.18 × 0°.72 Atlas Image mosaic shows one of the most luminous star-forming complexes in the Galaxy, W51. The environment here is rich in newly-forming massive stars,compact and extended H II regions, and molecular clouds. 1998 Nov 17-23