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.

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.

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.

This spectacular image from the NASA/ESA Hubble Space Telescope of the group of galaxies called Stephan's Quintet has provided a detailed view of one of the most exciting star forming regions in the local Universe. Stephan's Quintet is a favoured object for amateur astronomers and has earned a reputation as a challenging target for good hobby telescopes. The quintet is a prototype of a class of objects known as compact groups of galaxies and has been studied intensively for decades. This…

This spectacular image from the NASA/ESA Hubble Space Telescope of the group of galaxies called Stephan's Quintet has provided a detailed view of one of the most exciting star forming regions in the local Universe. Stephan's Quintet is a favoured object for amateur astronomers and has earned a reputation as a challenging target for good hobby telescopes. The quintet is a prototype of a class of objects known as compact groups of galaxies and has been studied intensively for decades. This…

NGC 6193 and NGC 6188 ~ At the center left of the image is the open star cluster NGC 6193, containing around thirty bright stars and forming the heart of the Ara OB1 association. The Rim Nebula, or NGC 6188, is visible to the right of the cluster. This is the most detailed view of this region yet achieved. (ESO VLT Survey Telescope)

NGC 6193 and NGC 6188 ~ At the center left of the image is the open star cluster NGC 6193, containing around thirty bright stars and forming the heart of the Ara OB1 association. The Rim Nebula, or NGC 6188, is visible to the right of the cluster. This is the most detailed view of this region yet achieved. (ESO VLT Survey Telescope)

Located some 1300 light-years away in the constellation of Carina (The Keel of the ship Argo). It is informally known as the Wishing Well Cluster, as it resembles scattered silver coins which have been dropped into a well, It was the first target to be observed by the NASA/ESA Hubble Telescope. (May 1990) The stars that with moderate masses are still shining brightly with blue-white colors, but the more massive ones have already exhausted their supplies of hydrogen becoming red giant stars.

Located some 1300 light-years away in the constellation of Carina (The Keel of the ship Argo). It is informally known as the Wishing Well Cluster, as it resembles scattered silver coins which have been dropped into a well, It was the first target to be observed by the NASA/ESA Hubble Telescope. (May 1990) The stars that with moderate masses are still shining brightly with blue-white colors, but the more massive ones have already exhausted their supplies of hydrogen becoming red giant stars.

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)

STARS bracelet  The core of the galaxy Blue Stars .Parecido AM 0644-741- a diamond-encrusted bracelet, a ring of brilliant blue star clusters wraps around the yellowish nucleus which was once a normal spiral galaxy. This image Credit: Hubble Space Telescope NASA

STARS bracelet The core of the galaxy Blue Stars .Parecido AM 0644-741- a diamond-encrusted bracelet, a ring of brilliant blue star clusters wraps around the yellowish nucleus which was once a normal spiral galaxy. This image Credit: Hubble Space Telescope NASA

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.

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