The Universe has been broadcasting since the dawn of time in the ``gravity channel’’ through the immensely weak form of radiation known as gravitational waves, but we have not been able to listen to it yet. This is about to change dramatically, and is expected to produce a revolution in our understanding of the Universe and, ultimately, of the behaviour of gravity as one of nature fundamental interactions.
Gravitational waves, predicted by Einstein almost 100 years ago, are ripples of the fabric of space-time that propagate at the speed of light and are produced by the most violent events in the Universe, such as colliding black holes and the big bang itself. They have never been directly detected.
I will discuss how advances in many areas of physics are putting us in the position of capturing for the very first time this unheard broadcast of the violent Universe.