The event, which is free and open to the public, will begin at 5:30 p.m. in the Dos Rios Don Roberto Room of the Science Center of Iowa, 319 Court Ave. in downtown Des Moines.
Nelson will describe his own research and the current understanding of quasars, the compact regions in the center of galaxies that surround super massive black holes. Quasars are the most luminous objects in the universe.
Nelson serves as chair of the Drake Physics and Astronomy Department and director of the Drake Municipal Observatory.
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