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White dwarfs are the extremely dense, compact remnants of stars that have ended their lives, and are at the origin of tremendous explosions known as novae. This phenomenon (not to be confused with supernovae, which destroy the star) is thought to be the...
Article
02.06.2025
Based in Namibia, the H.E.S.S. telescope array monitors the showers of particles produced when the highest-energy cosmic rays ever observed in the Universe impact the Earth's atmosphere.
Article
01.29.2025
Astronomical observatories can yield exceptional discoveries, but they are sometimes built with little regard for the environment and local people, sparking public opposition. The sociologist and historian Pascal Marichalar takes a closer look at these issues...
Article
01.20.2025
A genuine technological gem, the James Webb Space Telescope has been exploring the smallest nooks of the Universe over the last two years. From the birth of planets and the first galaxies to the atmospheric composition of exoplanets, the space observatory’s...
Article
12.04.2024
See also
11.15.2024
Astrochemistry, a relatively new field, focuses on exploring chemistry in interstellar spaces to uncover insights about the origins of life on Earth. This discipline has seen significant advancements...
10.16.2024
Interview with the linguist Frédéric Landragin, who recently published a short guide on interstellar communication.
Article
08.30.2024
For nearly ten years, astronomers have been trying to demonstrate the existence of a massive object thought to be orbiting in the outer reaches of the Solar System. Although the hypothesis is widely...
Slideshow
07.12.2024
It took hundreds of scientists worldwide, including several CNRS teams, to produce the world’s largest digital camera, the LSST (Legacy Survey of Space and Time), which has finally arrived in Chile....
Article
06.27.2024
On 22 June, a Chinese Long March 2C rocket launched the SVOM satellite, carrying two French-designed instruments, into orbit. The mission's goals are to investigate the mechanism of gamma-ray...
Article
06.20.2024
Alessandro Morbidelli is a specialist in the evolution and formation of planetary systems, and holds the planetary formation Chair at the Collège de France. The astrophysicist looks back on his...