Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Just above and to the right of the photograph's center are the four stars that mark the boundaries of the famous Southern Cross . The band of stars, dust, and gas crossing the middle of the photograph is part our Milky Way Galaxy . In the very center of the photograph is the dark Coal Sack Nebula, and the bright nebula on the far right is the Eta Carina Nebula . The southern cross is so famous a constellation that it is depicted on the Australian National Flag .
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