Replay of the lecture (in french) given by Pierre Léna, astrophysicist and Professor Emeritus, Observatoire de Paris – PSL & Université Paris Cité, member of the Académie des sciences on February 24, 2026 at the Médiathèque José Cabanis in Toulouse.
In 1973 over Africa, the Concorde-001 prototype, piloted by André Turcat and flying at Mach 2 in the shadow of the Moon, offered the nine scientists on board the longest totality of a solar eclipse: 74 minutes. Fifty years on, the solar corona, more easily observed from space and responsible for a new meteorology, still raises questions. The Lyot Coronagraph, born at Pic-du-Midi to study this corona, now installed on the JWST telescope, discovered a remarkable exoplanet, while its successor will be looking for Earth’s twin sisters.
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