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NASA's Chandra press release on the galaxy cluster RBS 797
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We discovered four enormous cavities, or bubbles, at the center of a galaxy cluster using NASA's Chandra X-ray Observatory. This unusual set of features may have been caused by eruptions from two supermassive black holes closely orbiting each other, or by a quick change in the jets' orientation of a single supermassive black hole. An animation is presented here and the full article is published in The Astrophysical Journal Letters .
