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A massive galaxy cluster 2XMM J083026524133
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A massive galaxy cluster: 2XMM J083026+524133

January 25, 2013
The image, taken by the EPIC camera onboard ESA's XMM-Newton observatory, in which the massive galaxy 2XMM J083026+524133 was discovered. This object, seen here to the right of the image, was captured unexpectedly during an observation of a different XMM-Newton target - an active galaxy, seen here as the bright spot in the upper left. At the time of the discovery 2XMM J083026+524133 was the most massive galaxy cluster that had been found up to that point in the distant Universe. Copyright: ESA XMM-Newton/EPIC (G. Lamer)