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Submission + - Cosmic curiosity reveals ghostly dead quasar

Matt_dk writes: While sorting through hundreds of galaxy images as part of the Galaxy Zoo citizen science project two years ago, Dutch schoolteacher and volunteer astronomer Hanny van Arkel stumbled upon a strange-looking object that baffled professional astronomers. Two years later, a team led by Yale University researchers has discovered that the unique object represents a snapshot in time that reveals surprising clues about the life cycle of black holes.
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Cosmic curiosity reveals ghostly dead quasar

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