Predicted by Einstein almost a century before, Gravitational waves (GW) have eluded direct detection till now. The first detection of gravitational waves by detectors like Advanced LIGO and Virgo seems imminent. When detections become routine, inaugurating GW astronomy requires extension of the current network by LIGO-India to provide good sky localization for the GW sources. LIGO-India will play a key role in locating and deciphering GW sources with implications for astrophysics, cosmology and eventually fundamental physics.