Gravity is described by Einstein's general theory of relativity. One of predictions of this theory, which seemed outrageous at first, is the existence of “black holes”, regions in which gravity is so strong that not even light can escape. By now, astronomers have assembled an arsenal of evidence indicating that black holes are rather common in our universe. Another prediction of general relativity is the existence of “gravitational waves,” propagating waves of gravitational force arising from the motion of massive systems. The action of gravitational waves upon certain star systems in our galaxy has been measured with very high precision, providing indirect proof for the existence of these waves. 

Scott will describe how we intend to use these waves to open an entirely new astronomical window on the universe. He will focus on black holes, describing how gravitational wave measurements will make it possible to learn about black hole systems and probe the nature of these fascinating bodies.