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 Messier 101 -The Pinwheel Galaxy

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M101 - the Pinwheel Galaxy

Another beautiful face-on spiral galaxy in the constellation of Ursa Major (which contains the Big Dipper).  Its spiral arms are much more open than those of M51 and it is much larger than our Milky Way Galaxy, at 170,000 light years across.  It is about 21 million light years away.


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