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LOOK: Vast Star Cluster Shines In High-Res Hubble Telescope Image

By: Clara Moskowitz Published: 03/16/2012 12:26 PM EDT on Hundreds of thousands of glittering stars shine in a cluster at the center of our galaxy in a new photograph from the Hubble Space Telescope. The cluster is called Messier 9, and contains hordes of stars swarming in a spherical clou...
Amy Venman
Amy Venman • 2 years ago

Messier 9 is what's known as a globular cluster, containing some of the oldest stars in the galaxy in a clump that is thought to have formed together when the universe was much younger. These stars, which are about twice as old as the sun, are made of different materials than our star. They tend to lack the sun's heavier elements, such as oxygen, carbon and iron, which were only present in larger quantities when the universe was older.

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