active galaxies

Artist drawing of a blazar, a galaxy with a supermassive black hole spewing out energy. Credit: DESY, Science Communication Lab
News: Monster black holes shoot out neutrinos like cosmic bullets
Phil Plait
Jul 12, 2018

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Ring(s) around the black hole
Phil Plait
Feb 15, 2018
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Hubble image of the magnificent spiral galaxy M 77. Credit: NASA, ESA & A. van der Hoeven
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A gigantic black hole finds its long-lost, and slightly less gigantic, sibling
Phil Plait
Jun 21, 2017
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black holes
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