Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Nine years ago the massive Compton Gamma Ray Observatory , the second of NASA's space-based great observatories , was deployed in low earth orbit. Illustrated above, the controlled re-entry will occur early tomorrow, June 4th, in a remote area of the Pacific Ocean, approximately 2,500 miles southeast of Hawaii.
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