ScienceDaily -- NASA's Swift satellite recently detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galaxy. The outburst, produced by a rare X-ray nova, announced the presence of a previously unknown stellar-mass black hole.
MORE: http://www.sciencedaily.com/releases/2012/10/121005162822.htm
See also...
Star Discovered Racing Around Black Hole at Center of Our Galaxy: Crucial to Revealing Fabric of Space and Time
http://www.sciencedaily.com/releases/2012/10/121004141749.htm
Surprising Black Hole Discovery Changes Picture of Globular Star Clusters
http://www.sciencedaily.com/releases/2012/10/121003132119.htm
