This animated GIF shows rings of X-rays, shown in red, that expand away from a central white dot, like a bullseye target.
Credit: Andrew Beardmore (Univ. of Leicester) and NASA/Swift
Published: July 9, 2015

NASA's Neil Gehrels Swift Observatory imaged rings of X-ray light centered on V404 Cygni, a binary system containing an erupting black hole (dot at center), with its X-ray Telescope from June 30 to July 4, 2015. The dark lines running diagonally through the image are artifacts of the imaging system.

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