LIGO, or the Laser Interferometer Gravitational-Wave Observatory, is a groundbreaking facility designed to detect gravitational waves—ripples in spacetime caused by massive cosmic events like merging black holes and neutron stars. By using laser beams and highly sensitive instruments, LIGO can measure incredibly tiny changes in distance, allowing scientists to observe phenomena that were previously undetectable. Since its first detection of gravitational waves in 2015, LIGO has opened a new window into the universe, enabling researchers to study the cosmos in ways that complement traditional astronomy. This revolutionary advancement has profound implications for our understanding of the universe and the fundamental laws of physics.