2 december 2016

XXL-jacht op clusters van sterrenstelsels

This image shows XXL-South Field (or XXL-S), one of the two fields observed by the XXL survey. XXL is one of the largest quests for galaxy clusters ever undertaken and provides by far the best view of the deep X-ray sky yet obtained. The survey was carried out with ESA</p><div id='jp-relatedposts' class='jp-relatedposts' ><h3 class=Gerelateerd

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