Monday, December 13, 2010

APOD 2.5

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In the center of this picture is M81, a spiral galaxy similar to the Milky Way.  This galaxy is 11.8 million light-years away from Ursa Major.  The galaxy has a bright yellow core with blue spirals branching off and paths of dust around the center.  Another feature of the galaxy is Arp's Loop.  Arp's Loop is a tidal tail of material that is being pulled by the gravity of a nearby galaxy M82.  

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