A spectacular tour, from the solar system to the most distant objects that have been observed reveals the vastness of the Universe, which began with an explosion 13.7 billion years ago. Hamuy shows that the Universe is tremendously dynamic and in permanent evolution. The astronomer is from Chile, a country that has become the Earth’s window into space. He was part of the team that detected the acceleration of the universe and the existence of a new dark energy component in the 1990s. Chaired by Martin Rees.