Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Pictured above is the largest ball of stars in our Galaxy. Recent evidence indicates that Omega Centauri is by far the most massive of the about 160 globular clusters in the Milky Way . The stars in globular clusters are generally older, redder and less massive than our Sun. Studying globular clusters tells us about the history of our Galaxy and the age of the universe .
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