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M101 - The Pinwheel Galaxy in Ursa Major, Hap Griffin

M101 - The Pinwheel Galaxy in Ursa Major

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M101 - The Pinwheel Galaxy in Ursa Major, Hap Griffin

M101 - The Pinwheel Galaxy in Ursa Major

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Description

One of my favorite astronomical objects...the beautiful Pinwheel Galaxy, known as M101. Recognized as one of the finest examples of a classic spiral, it actually is quite non-symmetrical with its core being considerably off-center. It lies at a distance of 27 million light-years and is huge (as galaxies go), spanning 170,000 light years across its diameter, nearly twice the size of our own Milky-Way galaxy. It has a total luminosity of 30 billion suns.

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M101 - The Pinwheel Galaxy in Ursa Major, Hap Griffin