Gravitational waves are vibrations of spacetime, born from extreme cosmic events such as the collision of black holes. Predicted by Einstein in 1916, they remained invisible until their historic detection in 2015 by LIGO.
 These waves carry within them the most intimate secrets of extreme cosmic phenomena.
 Traveling at the speed of light, they offer a new window on the universe by revealing phenomena inaccessible to light. Their study allows us to scrutinize the deepest mysteries of the cosmos, opening a revolutionary era for astrophysics.