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Chandra looks over a cosmic four-leaf clover

07/07/2004 12:00AM

Chandra looks over a cosmic four-leaf clover

NASA’s Chandra X-ray Observatory has uncovered evidence that a single star in a foreground galaxy may have magnified X-rays coming from a rare quadruple quasar. About 11 billion light years from Earth, the Cloverleaf quasar is a single object that appears as four images. The Marshall Center manages the Chandra program.


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