"Since it was first observed thirty-seven years ago, understanding the source of the X-ray background has been the Holy Grail of X-ray astronomy. Now, it is within reach."
- Dr. Alan Bunner, Director NASA's Structure and Evolution of the Universe
January 17, 2000 Huntsville, Alabama - NASA's Chandra X-Ray Observatory was launched only five months ago, but it continues to astonish astronomers with its discoveries. One of the most perplexing cosmic mysteries has been the source of x-ray radiation that seems to pervade the universe.
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