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Science 18 January 2008:
Vol. 319. no. 5861, p. 271
DOI: 10.1126/science.319.5861.271a
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News of the Week

ASTRONOMY:
Most-Massive Black Hole Confirms Relativity Rules the Universe

Govert Schilling

Astronomers observing a supermassive black hole 3.5 billion light-years from Earth have found that the object brightened dramatically at just the time the equations of general relativity predicted.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)