Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. The central open cluster contains about 2000 bright stars, each of which is much brighter and more massive than our Sun . Together, radiation s from these stars are energizing and pushing away surrounding material, making NGC 3603 one of the most interesting HII regions known. Possibly most interesting about this recently released, representative-color picture are the large number of dim stars visible. These stars are less massive than our Sun, demonstrating that great numbers of low-mass stars also form in active starburst regions .
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