8 years ago
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M13 - The Hercules Globular Cluster (NGC 6205)
Located in the Keystone portion of the Hercules constellation.
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M13 contains hundreds of thousands of stars - red giants, blue stragglers, Sun-like stars, red and white dwarfs. It is about 25,000 l ight years away and about 12 billion years old. (Photo by Bob Star)
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Core of M13, taken by the Advanced Camera for Surveys on the Hubble.
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Messier Monday: The Great Globular Cluster in Hercules, M13
Lots of pictures of M13! -
M13: Great Cluster in Hercules
How to find M13 in the night sky. -
Messages to the Universe: A Short History of Interstellar Communication
Information on the Arecibo message that was transmitted to M13 in 1974.
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This is one of my favorites, most Messier objects are smudges, M13 is really spectacular in a good sized scope. Even though the pictures above are good they don't match what I've seen on a moonless night. Thanks for posting this.