SHEDDING LIGHT ON DARK MATTER NASA'S CHANDRA X-RAY OBSERVATORY REVEALS THE INVISIBLE STUFF THAT MAKES UP OUR UNIVERSE

From: The Boston Globe (Boston, MA) | Date: December 31, 2002| Author: | Copyright information

Scientists, as a rule, enjoy mysteries. But perhaps the biggest mystery in astronomy has been more frustrating than fun: Astronomers are unable to detect most of the matter in the universe. "This is embarrassing," said Claude Canizares, a professor of physics at the Massachusetts Institute of Technology who is researching the problem. "Ninety percent of the universe is dark and cannot be seen!"

When we gaze upon the night sky, we see bright stars by the thousands, and many millions or even billions more through telescopes. We can find gas clouds, planets, even whole galaxies glowing brightly. ...

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