Part Of Universe's Missing Matter Discovered By XMM-Newton X-Ray Observatory

ESA's orbiting X-ray observatory XMM-Newton has been used by a team of international astronomers to uncover part of the missing matter in the universe. Ten years ago, scientists predicted that about half of the missing 'ordinary' or normal matter made of atoms exists in the form of low-density gas, filling vast spaces between galaxies. But the low density of the gas hampered many attempts to detect it in the past. With XMM-Newton's high sensitivity, astronomers have discovered its hottest parts.

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