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Published on 10 October 2023

Pulsar emits highest-energy radiation ever observed

On Thursday, October 5, 2023, a press alert appeared in Nature Astronomy about recent work by Arache Djannati-Ataï, a CNRS researcher at the Laboratoire...
Published on 27 September 2023

The revisited mass of the Milky Way is much smaller than expectations from cosmology

Thanks to the latest Gaia satellite catalogue from the European Space Agency (ESA), an international team led by astronomers from the Paris Observatory – PSL...
Published on 11 July 2023

Université PSL wins 11 million euros in the 2023 Pôles Universitaires d’Innovation (PUI) call for proposals

On Monday July 10, Sylvie Retailleau, French Minister for Higher Education and Research, chose the PSL University campus to announce the winners of the Pôles...
Published on 29 June 2023

Pulsars: a new window for observing gravitational waves

As part of a global network dedicated to pulsar observation, a European consortium published on June 29, 2023 in the journal Astronomy and Astrophysics a...
Published on 4 May 2023

Why is the Solar System so stable?

The long-term orbital stability of the inner planets in our Solar System is still an open problem: the orbits of Mercury, Venus, Earth, and Mars are highly...
Published on 3 May 2023

The Moon opens its heart for the first time

Fifty years after Apollo 11 paved the way for the first studies of the Moon, a team of scientists from CNRS, Université Côte d’Azur, Observatoire de la Côte...
Published on 3 May 2023

Detection of distant gas clouds containing traces of the first stars

In the framework of an international collaboration, a researcher from Observatoire de Paris - PSL at GEPI (Observatoire de Paris - PSL/CNRS) discovers that...
Published on 8 February 2023

Improbable discovery of a ring around the transneptunian object Quaoar

Would Édouard Roche (1820 - 1883) have been mistaken? An international team, involving French researchers from the Observatoire de Paris - PSL, Sorbonne...