Research NewsBlack-Hole Observations

The Gathering Darkness

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Science  24 Jan 1997:
Vol. 275, Issue 5299, pp. 477
DOI: 10.1126/science.275.5299.477

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Black holes are flourishing in theorists' computers and on their blackboards (see related item). But these objects—the children of Einstein's theory of gravity—are also alive and well in the universe, observers are finding. They are detecting increasingly strong signs of black holes at the centers of galaxies and, closer to home, in turbulent x-ray beacons.