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Picture Album: The Dog Star, Sirius, and its Tiny Companion

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The Dog Star, Sirius, and its Tiny Companion
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Credit: NASA, H.E. Bond and E. Nelan (Space Telescope Science Institute, Baltimore, Md.); M. Barstow and M. Burleigh (University of Leicester, U.K.); and J.B. Holberg (University of Arizona)

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