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Showing posts with label VISTA world's largest telescope. Show all posts
Showing posts with label VISTA world's largest telescope. Show all posts

Thursday, January 10, 2013

New View of the globular cluster 47 Tucanae


Globular clusters 47 Tucanae are huge spherical cloud of old stars held together by gravity. They are turning around the cores of galaxies, and satellites orbiting Earth. These groups of stars contain very little gas and dust - it is believed that most of the cluster has been driven by winds and explosions of stars it contains, or has been torn by the interstellar gas has been interacting with the cluster. Any remaining material coalesced into stars billions of years ago.