ursa major :

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ursa major

  • n  a constellation outside the zodiac that rotates around the North Star
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  ursa major
  • Pinwheel In The Sky
    ESA The face-on Pinwheel spiral galaxy is seen at ultraviolet wavelengths in this image taken by ESA’s XMM-Newton space telescope. Also known as M101 , the galaxy lies 21 million light-years away in the constellation Ursa Major . It measures 170 000 light-years across – nearly twice the diameter of our own Milky Way Galaxy – and contains at least a trillion stars. About a billion of these stars ...
    June 10, 2013 - redOrbit

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