Colloquium

The first few years of Gravitational Wave (GW) astronomy have been highly eventful. The excitement exceeded the expectations of many of us. Nevertheless, this field is still in its nascent state. A treasure trove of science is waiting for us to explore. LIGO-India is expected to play a pivotal role in this journey. On the one hand, it has the potential to immensely boost Astrophysics and Cosmology along with other contemporary observatories. On the other, LIGO-India will provide the opportunity to install and commission a brand new kilometer-class state-of-the-art GW detector for aspiring researchers and industries across the country. Moreover, because it will be a young detector, it could be the most optimal one to serve as a testbed for the next-generation detectors. While the expected science returns from LIGO-India, both in theoretical and experimental domains, are already fascinating, the scope can be dramatically expanded with the addition of a space-based deci-Hertz GW detector.