X-ray Astronomy--40 Years on

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Science  30 Aug 2002:
Vol. 297, Issue 5586, pp. 1485-1486
DOI: 10.1126/science.1075482

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Forty years ago, the first rocket detected x-rays from space. In his Perspective, Gursky charts the history of this rocket flight and explains how the detection of astronomical x-rays has changed astronomy. Today, x-ray space missions are helping to resolve one of the last frontiers of astronomy by providing insights into the vicinity of neutron stars and black holes.