Thursday, August 26, 2010

Not a Comet

Today's Astronomy Picture of the Day: Messier 27, not a comet. Charles Messier, the "ferret of comets" built a catalog of objects that were not comets, but (in the optics of the day) could be mistaken for such. It is one of those odd bits of history that Messier is known for his catalog of non-comets but his comets are forgotten.

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