A supermassive black hole revealed itself with a flash of light, shown at the center of this image in blue, as it wandered the edge of a galaxy. (IMAGE)

University of Maryland

A supermassive black hole revealed itself with a flash of light, shown at the center of this image in blue, as it wandered the edge of a galaxy.

Caption

A supermassive black hole revealed itself with a flash of light, shown at the center of this image in blue, as it wandered the edge of a galaxy.

Credit

Robert David Stein

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