Chandra Discovers Light Echo from the Milky Way's Black Hole

physorg.com — Like cold case investigators, astronomers have used NASA's Chandra X-ray Observatory to uncover evidence of a powerful outburst from the giant black hole at the Milky Way's center. Astronomers believe a mass equivalent to the planet Mercury was devoured by the black hole about 50 years earlier, causing an X-ray outburst Jan 10, 2007 View in Crawl 4