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Science Bulletins: Elusive Y-Dwarfs Discovered

Brown dwarfs are cosmic objects that are intermediate between stars and planets. Scientists have spent more than a decade seeking confirmation of the coolest, faintest type of brown dwarfs—Y-dwarfs—which had been predicted but never seen. Recently, the powerful infrared vision of NASA's Wide-Field Infrared Survey Explorer, or WISE, has captured these phantoms during its sweeping survey of the night sky.
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