For many years, researchers had believed that a supermassive black hole is probably at the center of our Galaxy, but not until recently have its effects been directly observed. This article describes recent research related to the black hole at the center of our Milky Way. This article is part of a special issue devoted to the IAU General Assembly, helping experts in this field learn about current research.
http://www.raa-journal.org/raa/index.php/raa/article/view/1207