XMM-Newton discovers the most massive cluster of galaxies
Monday, August 25, 2008 - 07:07
in Astronomy & Space
ESA's orbiting X-ray observatory XMM-Newton has discovered the most massive cluster of galaxies seen in the distant Universe until now. The galaxy cluster is so big that there can only be a handful of them at that distance, making this a rare catch indeed. The discovery confirms the existence of dark energy...
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