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NASA's Hubble Space Telescope is "seeing double." Peering back 10 billion years into the universe's past, Hubble astronomers found a pair of quasars that are so close to each other they look like a single object in ground-based telescopic photos, but not in Hubble’s crisp view. The researchers believe the quasars are very close to each other becau
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NASACast AudioBy National Aeronautics and Space Administration (NASA)