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'XMM-Newton’s massive discovery'
25 August 2008
'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.'
http://www.esa.int/esaCP/SEMY70XIPIF_index_0.html
http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=43263
http://arxiv.org/abs/0805.3817
25 August 2008
'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.'
http://www.esa.int/esaCP/SEMY70XIPIF_index_0.html
http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=43263
http://arxiv.org/abs/0805.3817