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Exhibitions and information

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Published on 7 October 2026

Let’s all celebrate Night Day on Saturday 10 October 2026!

The Paris Observatory – PSL is an official partner of the 18th edition of ‘Jour de la Nuit’, a national event organised by the charity ‘Agir pour...
Published on 2 October 2026

Friday 9 October, look up: a laser will link Meudon to Paris

To celebrate the 100th anniversary of the union of its Paris and Meudon sites, the Paris Observatory - PSL is firing a laser beam between its two domes. Join...
Published on 25 September 2026

The Paris Observatory - PSL, a partner of the 2026 Star’s Up Festival in Meudon

For its 8th edition, the Star’s Up space festival will take place at Hangar Y in Meudon on Saturday, September 26, and Sunday, September 27, 2026. Come meet...
Published on 21 September 2026

Observatoire de Paris - PSL participates in Fête de la science 2026

The Paris Observatory – PSL is taking part in the Fête de la Science by opening its Meudon site to the public on an exceptional basis on Saturday 10 October...
Published on 4 September 2026

Understanding the roundness of the Earth using a virtual reality headset app

Since 28 July 2026, the Space Department of the Time-Space Laboratory at the Paris Observatory – PSL invites you to discover – through the app it has...
Published on 17 July 2026

The Observatoire de Paris - PSL is participating in the Journées européennes du patrimoine 2026

On the occasion of the European Heritage Days, the Paris Observatory – PSL is opening the doors of its two sites in the Paris region in turn. On Saturday,...
Published on 15 May 2026

Solar eclipse on 12 August 2026: the Paris Observatory – PSL launches the ÉclipSEOP app

To mark the solar eclipse on 12 August 2026, the Paris Observatory – PSL is offering the general public a web application designed to help them prepare for...
Published on 16 March 2026

International Symposium on March 21: “Camille Flammarion, the Unsung Hero”

On Saturday, March 21, 2026, an international symposium dedicated to Camille Flammarion (1842–1925) will be held at the Conservatoire national des arts et...
Published on 30 October 2025

The Paris Observatory – PSL at Explor’Espace: three days to share our passion for the sky and science

From November 7 to 9, 2025, the Explor’Espace festival returns to the Beffroi de Montrouge for its third edition, organized by the French Astronomy...
Published on 21 October 2025

Exo4Edu: heading for implementation!

The European project Exo4Edu – Exoplanets for Education, selected by the ERASMUS+ program (2024–2027) and coordinated by the Paris Observatory – PSL, is...