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Continue to ChatXMM-Newton discovers a new class of black holes https://aviationnews.eu/news/2009/07/xmm-newton-discovers-a-new-class-of-black-holes/
XMM-Newton discovers a new class of black holes https://aviationnews.eu/news/2009/07/xmm-newton-discovers-a-new-class-of-black-holes/