Star cluster

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)

The Pleiades star cluster (M45) is a group of 800 stars formed about 100 million years ago. The cluster is located 410 light-years away from Earth in the constellation Taurus.

The Pleiades star cluster (M45) is a group of 800 stars formed about 100 million years ago. The cluster is located 410 light-years away from Earth in the constellation Taurus.

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

Hubble Space Telescope image of the R136 super star cluster, near the center of the 30 Doradus Nebula, also known as the Tarantula Nebula or NGC 2070.

Hubble Space Telescope image of the R136 super star cluster, near the center of the 30 Doradus Nebula, also known as the Tarantula Nebula or NGC 2070.

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.

The Pleides Star Cluster Taurus

The Pleides Star Cluster Taurus

The star Mira, with its 13-light-year-long tail, zips through the galaxy at 291,000 miles per hour! This image was made from several Galaxy Evolution Explorer images put together into a mosaic.

The star Mira, with its 13-light-year-long tail, zips through the galaxy at 291,000 miles per hour! This image was made from several Galaxy Evolution Explorer images put together into a mosaic.

Star Cluster Pismis 24/Nebula NGC 6357: Pismis 24 hangs over NGC 6357, a nebula about 8000 ly away in the constellation Scorpius. This picture showed that the brightest star in the cluster is in fact two stars in a tight binary orbit. Each star is about 100 times the Sun's mass. Hubble

Star Cluster Pismis 24/Nebula NGC 6357: Pismis 24 hangs over NGC 6357, a nebula about 8000 ly away in the constellation Scorpius. This picture showed that the brightest star in the cluster is in fact two stars in a tight binary orbit. Each star is about 100 times the Sun's mass. Hubble

The star Sirius and the nearby star cluster M41 caught on January 2, 2016 in Weatherly, Pennsylvania. - Photo by Tom Wildoner at LeisurelyScientist.com

The star Sirius and the nearby star cluster M41 caught on January 2, 2016 in Weatherly, Pennsylvania. - Photo by Tom Wildoner at LeisurelyScientist.com

Jewel Box Star cluster in the Southern Hemisphere is a star cluster about 20 light years across with 198 stars, The stars from Earth are exceptionally beautiful with colours varying from red and yellow to the more common blue white with a number of luminous B type giant stars and a red super giant star. More info here

Jewel Box Star cluster in the Southern Hemisphere is a star cluster about 20 light years across with 198 stars, The stars from Earth are exceptionally beautiful with colours varying from red and yellow to the more common blue white with a number of luminous B type giant stars and a red super giant star. More info here

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