Our Galactic Neighbor Harbors a Second Black Hole

Friday, June 10, 2011 - 15:00 in Astronomy & Space

Markarian 739 - just 425 light years away - is only the 2nd galaxy within 500 million light years known to have twin active galactic nuclei. NASA's Swift and Chandra observatories made the discovery.

Read the whole article on Space.com

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