Let us listen to the symphony of our Universe!
On September 14, 2015, two LIGO detectors located in Livingston, Lousiana and Hanford, Washington observed gravitational waves from a black hole binary merger event located at 1.33 billion light years away in a distant galaxy. This is the first direct detection of gravitational waves and first evidence of black-hole binary merger. With this historical discovery, a new window of gravitational wave astronomy is opened to the universe. In this talk, Dr. Archana Pai will develop necessary background of gravitational waves, optical laser interferometer as a gravitational wave detector leading to this historic discovery.