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Clusters of galaxies
- Title Clusters of galaxies
- Released 03/05/2006 2:18 pm
- Copyright ESA and the XMM-Newton EPIC consortium
Eighty-one galaxy clusters – objects that make extended X-ray emissions - are know from former sky surveys (see image). Previously unknown sources of these kind are now being catalogued thanks to XMM-Newton's slew sky survey.
Studying these objects, especially when highly luminous, is very important to investigate the evolution of the Universe.