Globular Star Cluster M13 - a photo on Flickriver

            Hubble catches an instantaneous glimpse of many hundreds of thousands of stars moving about in the globular cluster M13, one of the brightest and best-known globular clusters in the northern sky. This glittering metropolis of stars is easily found in the winter sky in the constellation Hercules and can even be glimpsed with the unaided eye under dark skies.

M13 is home to over 100,000 stars and located at a distance of 25,000 light-years. These stars are packed so closely together in a ball, approximately 150 light-years across, that they will spend their entire lives whirling around in the cluster.

Near the core of this cluster, the density of stars is about a hundred times greater than the density in the neighborhood of our sun. These stars are so crowded that they can, at times, slam into each other and even form a new star, called a "blue straggler."

08-40

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Taken on: January 15, 2009

Tags:

astronomy

Hubble

Heritage

globular

star

cluster

Messier

Hercules « less

Sets appears in: • ACS • Stars

Stats: 11,614 views / 1 comment

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