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Astronomy

M 13

M 13 or NGC 6207, also known as the Great Globular Cluster in Hercules, is an object made up of hundreds of thousands of old stars and it lies in the halo of our galaxy.
It has a diameter of 145 light years, a distance of 22000 light years from Earth, and an apparent magnitude of nearly 6, so it is almost visible to the naked eye.

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