Cataclysmic events, like the merger of two massively dense black holes, result in vibrations or ripples in the universe that eventually reach Earth. That is how Embry-Riddle Aeronautical University astrophysicists describe gravitational waves that stretch and compress the fabric of space. “The metaphor that we like to use is that gravitational waves let us hear the universe,” said ERAU physicist Dr. Brennan Hughey. “Most astronomy is done through photons in one way or another – everything … [Read more...] about Astrophysicists Listening as Black Holes Collide