From 3 October 2026 to 4 October
Cité des Sciences et de l’Industrie – Festival at the Cité des Sciences et de l’Industrie. The whole Cité is free on 3 and 4 October: around a hundred science activities, workshops and festivities for young and old alike, throughout the weekend!

3 October
APC – La Maison des Ondes. Explore physical phenomena through fun and immersive workshops: giant bubbles, gravitational wave vibrations, and other surprises.

4 October
GEOPS – The beauty of the mineral world! Discover the mineral collection of Paris-Saclay University.

4 October
IAS – Discover the world of space astrophysics. The Institute of Space Astrophysics opens its doors for a day dedicated to discovery, discussion and scientific curiosity.

4 October
OSUPS – The Universe at your fingertips. The Paris-Saclay University Observatory of Universe Sciences opens its doors to you!

From 5 October 2026 to 9 October
APC / Université Paris Cité – From Atoms to Stars. Visit several physics laboratories. On the programme: superconductivity, planetarium, gravitational waves, foams and a fog chamber.

From 8 October 2026 to 9 October
LPNHE / INSP – SAFIR: the journey of a particle. In the basement of the Paris Institute of Nanosciences, come and launch SAFIR, the Fast Ion Beam Analysis System.

From 8 October 2026 to 10 October
IPGP – Science Village at the Paris Institute of Earth Physics. To mark the 2026 Festival of Science, the IPGP is opening its laboratories to the public with a series of immersive workshops dedicated to geosciences.

From 8 October 2026 to 10 October
Paris Observatory-PSL – Welcome to Astronomy. Come and enjoy a change of scenery in an astronomical setting on the hills above Meudon and take part, free of charge, in a variety of activities devised by astronomers.

9 October
LISA / IPSL – ExoMars: en route to the Red Planet. Discover the ExoMars mission and its Rosalind Franklin rover through a game of snakes and ladders led by scientists from the project.

From 9 October 2026 to 11 October
LMD / IPSL – The climate: how does it work? Through fun experiments, learn how certain physical phenomena influence the climate.

10 October
LPNHE – ‘Two Infinities’ Conference at the LPNHE. Come and discover the physics of the infinitely small and the infinitely large through two lectures.

From 10 October 2026 to 11 October
Sorbonne University – Savoury Science at Sorbonne University. The largest science event in Paris, the Fête de la Science at Sorbonne University is putting flavours in the spotlight this year!

From 10 October 2026 to 11 October
LMD / IPSL – How does the climate work? …from an atmospheric perspective. Visit the LMD and discover fun experiments explaining key meteorological phenomena such as the colour of the sky or clouds.

11 October
LISA / IPSL – ExoMars: en route to the Red Planet. Discover the ExoMars mission and its Rosalind Franklin rover through a game of snakes and ladders hosted by scientists from the project.