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E-Mail IMAGE: Sloan Digital Sky Survey archival image from March 2004 (top) and the image from the authors observation campaign of the blazar, B2 1420+32, taken in January 2020 using ASAS-SN (bottom).. view more Credit: Sloan Digital Sky Survey archival image from March 2004 (top) and the image from the authors observation campaign of the blazar, B2 1420+32, taken in January 2020 using ASAS-SN (bottom).. A University of Oklahoma doctoral student, graduate and undergraduate research assistants, and an associate professor in the Homer L. Dodge Department of Physics and Astronomy in the University of Oklahoma College of Arts and Sciences are lead authors on a paper describing a changing-look blazar - a powerful active galactic nucleus powered by supermassive blackhole at the center of a galaxy. The paper is published in ....