Quasars & Active Galaxies

Dr. Dan Evans from the Harvard-Smithsonian Center for Astrophysics in Cambridge, MA, shares some information on 3c321, as of December 2007 now known as the Death Star Galaxy. Dan Evans has never seen Star Wars, so who came up with the nickname? Read on.

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NASA's Chandra X-ray Observatory has opened up a new era of performing x-ray astronomy and x-ray astrophysics.