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The requested URL /translate_c?depth=1&hl=it&prev=search&rurl=translate.google.it&sl=en&sp=nmt4&u=https://www.scientificamerican.com/article/the-puzzle-of-the-first-black-holes/&xid=17259,15700022,15700043,15700105,15700124,15700149,15700168,15700173,15700186,15700201&usg=ALkJrhi7oC0uDGlb26P9e8CBkCe6Oy1dFQ was not found on this server. That’s all we know.