Actualités

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Actualités Published on 6 November 2025

Results of the occultation of Ganymede – Night of October 13 to 14, 2025

Last month, a call was made to observe the rare occultation of the star HIP37442 by Ganymede. The operation was a resounding success thanks to the...
Actualités Published on 29 October 2025

Discovery of a ring system in formation around the Centaur object Chiron

An international team involving French researchers from LTE, Paris Observatory – PSL, Sorbonne University, and the CNRS, has discovered a ring system in...
Actualités Published on 29 October 2025

Publication of Guide de données astronomiques 2026

These annual ephemerides elaborated by IMCCE are published by the Bureau des longitudes since 1796.
Actualités Published on 30 September 2025

Occultation by Ganymede on October 14, 2025

A rare event will take place on the night of October 13-14, 2025: Ganymede, Jupiter’s third moon, will occult a star of magnitude 7. The phenomenon will be...
Actualités Published on 18 September 2025

Awarding of the Del Duca 2025 grant to Rodolphe Le Targat

The Simone and Cino Del Duca Foundation will awards in 2025 the grant for “Sciences of the Universe and their Applications” to Rodolphe Le Targat (Laboratory...
Actualités Published on 17 September 2025

Complete characterization of asteroid 2023 CX1: a unique case study for planetary defense

A large international collaboration, bringing together nearly 100 researchers from around the world and led by Auriane Égal (Paris Observatory/Montreal...
Actualités Published on 12 August 2025

The total lunar eclipse of 7 September 2025

This total lunar eclipse will be partially visible in mainland France, where it is expected to reach its peak at 8:11:48 p.m. (French legal time).
Actualités Published on 8 August 2025

AstroGeoFit revolutionizes the reading of Earth’s deep time

A major innovation that links celestial rhythms and sediments to unlock the secrets of ancient climate.
Actualités Published on 30 June 2025

A new look at Vesta

Geodetic observations of Vesta by the Dawn probe reveal the presence of a small core and open new question about the scenario for the formation of this...
Actualités Published on 12 June 2025

Global Optical Clock Network Redefines Precision Timing

The second—the fundamental unit of time—is on the brink of a major redefinition. In a groundbreaking international collaboration, ten next-generation atomic...