News
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Highlights
Published on 13 June 2025
Towards a new definition of the second thanks to a global network of atomic clocks
Published on June 12, 2025 in the journal Optica, an international study presents the simultaneous comparison of ten optical clocks in six countries, via...
Exhibitions and information
Published on 5 June 2025
Astronomy at Double Science festival
Researchers from the Paris Observatory will lead workshops at the Double Science festival on June 14 and 15, at a booth organized by PSL and shared with its...
Highlights
Published on 21 May 2025
Thirty years of Franco-Ukrainian cooperation in radio astronomy recognized by the Ukrainian Academy of Sciences
For over three decades, teams at Observatoire de Paris-PSL have been working closely with the Kharkiv Institute of Radio Astronomy (IRA) in Ukraine. This...
News from the labs
Published on 19 May 2025
Winds, Jets, and Wigglings from Young Stars and Their Disks
An international team of astronomers, including one researcher from Paris Observatory, has observed with the James Webb Space Telescope (JWST) to discover...
Highlights
Published on 15 May 2025
60 years of observing the cosmos: the Grand Radiotélescope de Nançay, a giant still at work
May 14, 2025 marks the 60th anniversary of the Grand Radiotélescope at the Observatoire Radioastronomique de Nançay (ORN). Inaugurated in 1965 by General de...
Highlights
Published on 30 April 2025
PHARAO successfully launched
On Monday April 21, 2025, PHARAO (Projet d’Horloge Atomique par Refroidissement d’Atomes en Orbite - Atomic Clock by Cooling Atoms in Orbit) became the first...
Press releases
Published on 14 April 2025
Primitive meteorites: a new study explains why they are so rare on Earth
While space missions such as OSIRIS-REx and Hayabusa2 bring back samples of carbon-rich asteroids, one question still puzzles scientists: why do we find so...
Highlights
Published on 8 April 2025
A new day on Uranus
Using the aurora of Uranus as a celestial clock, a team led by Paris Observatory - PSL has tackled a decades-old problem: redefining the rotation speed of...
Administrative news
Published on 8 April 2025
Guy Perrin awarded the CNRS Executive Medal of Honor
On March 10, 2025, Guy Perrin, researcher at LIRA (Observatoire de Paris - PSL), was awarded the médaille d’honneur des cadres for his commitment as deputy...
Administrative news
Published on 4 April 2025
Isabelle Bualé receives the Suzanne Bella Srodogora 2024 Prize
One year after the CNRS Crystal Medal, Isabelle Bualé receives the CNRS Foundation’s Prix Bella Srodogora, for the 2024 edition.