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Published on 1 October 2019

The dynamics of dwarf galaxies re-explained without black matter

For long attributed to the presence of dark matter, the properties of dwarf galaxies in the neighborhood of the Milky Way can be understood just by tidal...
Published on 20 August 2019

A second planet in the Beta Pictoris system

A team of astronomers led by Anne-Marie Lagrange, a CNRS researcher at the Institut de Planétologie et d’Astrophysique de Grenoble (CNRS/Université Grenoble...
Published on 11 July 2019

Laser Moon telemetry sheds light on the internal structure of the Moon

Using Laser-Moon telemetry data, the longest experience of the Apollo era, a team from Paris Observatory and Observatory of the Côte d’Azur (OCA) manages to...
Published on 4 July 2019

A new radio telescope, NenuFAR enters into scientific exploitation

The NenuFAR radio telescope, the result of a collaboration between Observatoire de Paris - PSL, the University of Orléans and CNRS, started being deployed in...
Published on 1 July 2019

Saturn’s moon Mimas, a snowplough in the planet’s rings

The Solar System’s second largest planet both in mass and size, Saturn is best known for its rings. These are divided by a wide band, the Cassini Division,...
Published on 11 March 2019

When geology reveals the ancient solar system

Because of the chaotic nature of the Solar System, astronomers believed till now that it would be impossible to compute planetary positions and orbits beyond...
Published on 25 February 2019

Publication of a new sky map containing thousands of galaxies unknown till now

Thanks to the LowFrequency Array (LOFAR) radiotelescope, an international team of scientists including astronomers at the Paris Observatory - PSL and the...