The discovery of gravitational waves in LIGO captured the imagination of the public, worldwide. Why? The answer is one that is fundamental to the human race. A universal feature that sets humans apart from other living species is our curiosity about nature and the world we live in. Some of this knowledge is self-serving, like how to cope with diseases or how to improve our way of life. However, our curiosity goes well beyond just satisfying needs, as it includes our fascination with the stars, the origin of the universe, or just simply our understanding how things work.