This stellar swarm is M80 (NGC 6093), one of the densest of the 147 known globular star clusters in the Milky Way galaxy. Located about 28,000 light-years from Earth, M80 contains hundreds of thousands of stars, all held together by their mutual gravitational attraction. Globular clusters are particularly useful for studying stellar evolution, since all of the stars in the cluster have the same age (about 15 billion years), but cover a range of stellar masses.

This stellar swarm is M80 (NGC 6093), one of the densest of the 147 known globular star clusters in the Milky Way galaxy. Located about 28,000 light-years from Earth, M80 contains hundreds of thousands of stars, all held together by their mutual gravitational attraction. Globular clusters are particularly useful for studying stellar evolution, since all of the stars in the cluster have the same age (about 15 billion years), but cover a range of stellar masses.

The Pleides Star Cluster Taurus

The Pleides Star Cluster Taurus

The Butterfly star cluster M6

The Butterfly star cluster M6

Super Star Cluster #Westerlund2! This cluster is so massive that it is expected to eventually evolve into a globular cluster.  It hosts a dozen O-class hypergiant stars, each one with a luminosity 30,000 - 1,000,000 times greater than that of our Sun.

Super Star Cluster #Westerlund2! This cluster is so massive that it is expected to eventually evolve into a globular cluster. It hosts a dozen O-class hypergiant stars, each one with a luminosity 30,000 - 1,000,000 times greater than that of our Sun.

M45: The Pleiades Star Cluster . Explanation: Perhaps the most famous star cluster on the sky, the Pleiades can be seen without binoculars from even the depths of a light-polluted city. Also known as the Seven Sisters and M45, the Pleiades is one of the brightest and closest open clusters. The Pleiades contains over 3000 stars, is about 400 light years away, and only 13 light years across. Credit & Copyright: Robert Gendler

M45: The Pleiades Star Cluster . Explanation: Perhaps the most famous star cluster on the sky, the Pleiades can be seen without binoculars from even the depths of a light-polluted city. Also known as the Seven Sisters and M45, the Pleiades is one of the brightest and closest open clusters. The Pleiades contains over 3000 stars, is about 400 light years away, and only 13 light years across. Credit & Copyright: Robert Gendler

Hodge 301 Hodge 301 is a star cluster located in the Tarantula Nebula about 168,000 light years away in the Large Magellanic Cloud Galaxy. The Tarantula Nebula is a star forming region, fueled by the star clusters hidden inside.

Hodge 301 Hodge 301 is a star cluster located in the Tarantula Nebula about 168,000 light years away in the Large Magellanic Cloud Galaxy. The Tarantula Nebula is a star forming region, fueled by the star clusters hidden inside.

@  Threadbare: Free Pattern- Star Cluster Mini Quilt

@ Threadbare: Free Pattern- Star Cluster Mini Quilt

Messier 5 ~ A globular star cluster, 100,000 stars or more, bound by gravity and packed into a region around 165 light-years in diameter. It lies only 25,000 light-years away. Roaming the halo of our galaxy, globular star clusters are ancient members of the Milky Way. M5 is one of the oldest, its stars estimated to be nearly 13 billion years old. The beautiful star cluster is a popular target for Earthbound telescopes. (NASA)

Messier 5 ~ A globular star cluster, 100,000 stars or more, bound by gravity and packed into a region around 165 light-years in diameter. It lies only 25,000 light-years away. Roaming the halo of our galaxy, globular star clusters are ancient members of the Milky Way. M5 is one of the oldest, its stars estimated to be nearly 13 billion years old. The beautiful star cluster is a popular target for Earthbound telescopes. (NASA)

Quilting With Judy Martin -- Lessons, Blocks, and Quilting Products From The World-Reknowned Quilter

Quilting With Judy Martin -- Lessons, Blocks, and Quilting Products From The World-Reknowned Quilter

Globular Star Cluster M3 by Oleg Bryzgalov on Flickr.

Globular Star Cluster M3 by Oleg Bryzgalov on Flickr.

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