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quasars
The ethereal wisps in these images were illuminated, perhaps briefly, by a blast of radiation from a quasar — a very luminous and compact region that surrounds a supermassive black hole at the centre of a galaxy.
Hubble Finds Eerie, Glowing 'Ghosts' of Dead Quasars

ByAna Verayo | Apr 03, 2015 12:10 AM EDT

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