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![]() ![]() Commissioning pictures taken by the XMM spacecraft show that its instruments "are functioning perfectly, to the great satisfaction of all involved," a statement said. The "spectacular first images" will be displayed at a press conference in Madrid next Wednesday, it added. Ten years in the making, the 689-million-dollar orbital observatory was sent aloft last December 10 by ESA's new Ariane-5 rocket. It comprises three long tubes of 58 sets of precision-honed concentric mirrors, designed to make it the most sensitive instrument ever built to pick up cosmic X-ray emissions. X-ray sources can come from some of the most violent and intriguing phenomena in the universe, such as black holes -- collapsed stars whose gravitational pull is so strong that light is gobbled up -- and "vampire stars" which suck up matter out of their neighbours.
SPACE SCIENCE
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