A gigantic sonic boom generated by a supermassive black hole has been found with NASA's Chandra X-ray Observatory, along with evidence for a cacophony of deep sound. This discovery was made by using data from the longest X-ray observation ever of M87, a nearby giant elliptical galaxy with one of the most massive known black holes. Credit: X-ray: NASA/CXC/CfA/W.Forman et al.; Optical: DSS
