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Published on 17 February 2023

How fast are the stars in the galaxy moving away from or toward you?

The stars in the sky are in motion relative to us: some are approaching - these are the dark areas on the image; others are moving away - the bright areas....
Published on 16 February 2023

A fragment of asteroid 2023 CX1 found in Normandy

Supported by the Museum national d’histoire naturelle, the Observatoire de Paris - PSL, the Université Paris-Saclay and the OSU-Pytheas, the...
Published on 14 February 2023

Detection of small planets around red dwarf stars

An international team involving researchers from Paris Observatory - PSL and CNRS has discovered and characterized a new exoplanet named TOI-1695b. It takes...
Published on 3 February 2023

Observing comet C/2022 E3 (ZTF)

The comet C/2022 E3 (ZTF) is visible in the sky throughout February 2023, even if its brightness allows to perceive it only weakly with the naked eye. The...
Published on 20 January 2023

Why does the heart of the stars rotate less quickly than expected?

Three French scientists, including a CNRS researcher from Paris Observatory - PSL, explain in an article published in Science on January 20, 2023 why the...
Published on 20 January 2023

Discovery of a rare binary star

An international team including two CNRS researchers from Paris Observatory - PSL has just discovered with the VLT a rare binary star, because very poor in...
Published on 16 January 2023

Time transmission from Paris to Turin by optical fiber

An international team of physicists has developed a 1,023 km fiber optic link between the SYRTE laboratory of the Observatoire de Paris - PSL and INRIM in...
Published on 16 December 2022

SWOT: a satellite to map the Earth’s water cycle

The launch of the NASA SWOT satellite on Thursday, December 15, 2022 opens a new path for satellite altimetry and promises a complete coverage of surface...
Published on 26 September 2022

The impact of DART on Dimorphos followed by the Paris Observatory - PSL

DART is NASA’s first planetary defense test mission. The Paris Observatory - PSL is a member of the DART Investigation Team. On Tuesday, September 27, 2022,...
Published on 7 September 2022

The James Webb Telescope delivers its first images of an exoplanet

At the beginning of September 2022, nine months after its launch, the James Webb Space Telescope provides unprecedented images of an exoplanet, the first...