Conference : Can We Really Travel Into the Future?
Roland Lehoucq is an astrophysicist working in the field of astrophysics for CEA Saclay. He teaches at the Ecole Polytechnique and the Institut d’études Politiques. Passionate about sharing scientific knowledge, he is a regular contributor to the monthly magazine Pour la Science, and he has written a column in the science-fiction magazine Bifrost for the past 19 years. He has written many articles targeted at a general readership in mass-consumption science magazines and gives approximately fifty lectures per year. He has also published or contributed to 30 books and collaborated on many exhibits at the Cité des Sciences et de l’Industrie, Palais de la Découverte, and Cité de l’Espace. Since 2012, he has presided over Utopiales, an international science-fiction festival in Nantes. In 2010, he was awarded the Diderot-Curien Prize by the Association of Museums and Centers for the Development of Scientific, Technical, and Industrial Culture. In January 2014, he was knighted by the Palmes Académiques. And in January 2018, he received the French Legion of Honor.
There was once a time when we thought that time was the same for everyone. In 1905, Einstein published his theory on special relativity, a theory that would undermine our previous notions of space and time. In 1915, his general relativity radically shifted our understanding of gravitation, which became intimately linked to space-time. Through an analysis of science-fiction films, we will illustrate and explain revolutionary concepts that emerged more than a century ago. This will help us understand how these theories form the basis of satellite positioning and to what extent they may allow us to travel into the future.