messier 51

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Messier Monday: The Whirlpool Galaxy, M51

“Upon one occasion, while engaged upon a seven-foot mirror, he did not remove his hands from it for 16 hours together.” –from Caroline Herschel’s obituary Welcome to another Messier Monday here on Starts With A Bang! Each Monday, we highlight a different one of the 110 deep-sky objects that Messier catalogued so that comet-hunters wouldn’t confuse these permanent…