Stellar radiation shapes the disks where planets are born

The region of the Orion Nebula, seen by the James Webb Space Telescope, analyzed by researchers. NASA/ESA/CSA/S. FUENMAYOR/PDRS4ALL Imagine the scene in the early morning: during the night a thin…

“Bitch”, a book that rehabilitates the feminine in animals

In his diary, Charles Darwin weighed, in 1838, the disadvantages and advantages of marriage. An argument in favor of living with a woman? “A faithful companion and friend in old…

The death of Roger Guillemin, endocrinologist and Nobel Prize winner in medicine

Endocrinologist Roger Guillemin, in Lyon, April 15, 2005. BRUNO AMSELLEM / DIVERGENCE Roger Guillemin, internationally renowned doctor and researcher, died on February 21, in San Diego (California), when he had…

Leap years and the addition of February 29, a story of the Julian calendar and celestial mechanics

The existence of Thursday February 29 brings the year 2024 to 366 days, instead of 365 for an ordinary year. These leap years are the simplest way that the Romans…

The Odysseus lunar probe put “to sleep”

This image provided by Intuitive Machines, February 27, 2024, shows Odysseus above the lunar South Pole region, shortly before its moon landing on February 22. AP THE ” success “…

On the trail of a universal antivenom

An Indian spectacled cobra (member of the snake family Elapidae) on the campus of the Indian Institute of Science. KARTIK SUNAGAR It is still only a small step for man,…

Can we explain Artificial Intelligence?

Ln February 8, 2023, Google lost, in twenty-four hours, 7% of its market value, or nearly 100 billion dollars, following the revelation of an erroneous response from its conversational agent…

This unique larynx that allows whales to sing

Whale songs have always fascinated sailors. For a long time, ancient navigators attributed these sinister sounds coming from the depths to mythical creatures, ghosts, or even to the various alcoholic…

Plant evolution, accelerated by genetic transposable elements

A wrinkled pea and another smooth, two characteristics studied by Gregor Mendel in his experiments in genetics and heredity. MARTIN SHIELDS/ALAMY/HEMIS Seeds, fruits, stems… Plants, too, have benefited from a…

These viruses that have colonized our genome: friends or enemies?

“Constructal 4”, photo printed on cotton and embroidered by hand, 2015. The embroidered portraits of the Chilean artist Juana Gómez combine the observation of nature and its processes with ancestral…

When jumping genes innovate in animals

Two birch moths (Biston betularia), one pale, the other dark. The dark form became dominant in parts of northern England after the Industrial Revolution, when trees were covered in soot.…

The Japanese lunar spacecraft SLIM has restarted, after two weeks of forced shutdown

This image provided by Japan Aerospace Exploration Agency JAXA shows a photo taken by a Lunar Excursion Vehicle 2 (LEV-2) of a robotic lunar rover called a Smart Lander for…

Birth of a future giant particle accelerator for the infinitely small

The future of a future particle accelerator is becoming clearer. On February 2, the governing body of the European Organization for Nuclear Research (CERN), representing the twenty-three member countries, took…

In the Arctic night, a new prey called jellyfish

Scavenger amphipods at Kongsfjorden in the Svalbard archipelago, Norway. These crustaceans feed on jellyfish corpses. LJellyfish have never had good press. Blame it on the bites of the most aggressive…

Jean-Michel Courty, magician of physics popularization

By joining the physicist’s office Jean-Michel Courty at Sorbonne University, at the Kastler-Brossel laboratory, we wonder how it will welcome us. With a spectacular whirlwind of fire, as he did…