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“ The team [of Boston University astronomer Alan Marscher] studied a galaxy called BL Lacertae […] about 950 million light years from Earth, with a central black hole containing 200 million times the mass of our Sun. Since this supermassive black hole’s jets are pointing nearly straight at us, it is called a blazar: a quasar is often thought to be the same as a blazar, except its jets are pointed away from us.
— Austin Garrett Ward (slightly adapted)
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