The Fête de la Science is back on Saturday, October 10, 2026, at the Paris Observatory on the Meudon campus. Come explore the vast world of astronomy with tours for all ages.
A green laser 8.5 kilometers long in the Paris sky? That’s what Île-de-France residents can expect this Friday, October 9, 2026, as night falls. From Meudon to the capital, a scientific experiment by the Paris Observatory promises an unusually striking light show.
Usually closed to the public, the Paris Observatory’s Meudon site will open its doors for Heritage Days. On Saturday, September 19, 2026, several tours will give visitors the chance to explore this iconic site, available by reservation.
In Meudon (92), the Fête de la Science opens the doors of its emblematic sites to astronomy, innovation and scientific heritage. Discover the program for the 2025 edition.
