Gravitational Waves are important because they are a phenomenon that can barely be grasped. They are important because they happen at all and they are worthy of observation so that scientists can figure out not only what kind of importance they really actually do have but also what that might mean for modern science and space exploration.
Gravitational Waves are created when two black holes collide. There is still yet a lot for scientists to learn about
gravitational waves and even a lot to learn about black holes themselves. These sort of discoveries could be keys to big things in the world of Astronomy.