Gargantuan black hole 'switches on,' becoming one of the brightest objects ever seen
Gargantuan black hole 'switches on,' becoming one of the brightest objects ever seen
www.livescience.com Gargantuan black hole 'switches on,' becoming one of the brightest objects ever seen
A black hole 10 billion light-years away suddenly 'switched on', becoming one of the brightest transient objects ever detected.
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