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Europe Lofts X-ray Observatory

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Science  17 Dec 1999:
Vol. 286, Issue 5448, pp. 2247-2248
DOI: 10.1126/science.286.5448.2247a

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To the relief and delight of engineers and x-ray astronomers, Europe's new space workhorse, the Ariane 5 launcher, deposited a $640 million x-ray observatory into orbit on 10 December. If all goes well, the European Space Agency's X-ray Multi-Mirror Mission will capture images of very distant sources of fluctuating x-rays, such as those produced by black holes or supernova explosions.