%ANicholl, Matt%ABlanchard, Peter%ABerger, Edo%AChornock, Ryan%AMargutti, Raffaella%AGomez, Sebastian%ALunnan, Ragnhild%AMiller, Adam%AFong, Wen-fai%ATerreran, Giacomo%AVigna-Gómez, Alejandro%ABhirombhakdi, Kornpob%ABieryla, Allyson%AChallis, Pete%ALaher, Russ%AMasci, Frank%APaterson, Kerry%Anull Ed.%BJournal Name: Nature Astronomy; Journal Volume: 4; Journal Issue: 9 %D2020%I %JJournal Name: Nature Astronomy; Journal Volume: 4; Journal Issue: 9 %K %MOSTI ID: 10284742 %PMedium: X %TAn extremely energetic supernova from a very massive star in a dense medium %X %0Journal Article