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image:128287:1::0
Image uploaded by Greta McClain

2012-10-15 07:18:14

NASA’s Swift satellite recently detected a growing flow of high-energy X-rays from somewhere near the center of our galaxy. The outburst, pictured in this illustration, was produced by a rare X-ray nova and announced the presence of a previously unknown stellar-mass black hole.

image:128287:1::0
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