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Last updated on April 25, 2014 at 1:22 EDT
Accretion Disk Around Binary Star System WZ Sge
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Accretion Disk Around Binary Star System WZ Sge

January 11, 2008
An artist's concept of the accretion disk around the binary star system WZ Sge using data from Kitt Peak National Observatory and the Spitzer Space Telescope, which includes an asymmetric outer disk of dark matter.