Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. E. J. Ostrander et al. Nearby clusters have galaxies with colors that are much more yellow and blue. If true, this cluster might lie too far away to have formed in a dense universe, implying that our universe is not very dense. Astronomers will now work to confirm the high distance to this cluster , and contemplate what it signifies about the nature of our universe .
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