Chère lectrice, cher lecteur, Depuis l’agression de l’Ukraine par Moscou et l’appel qui s’en est suivi de tous les recteurs russes à soutenir la guerre, les universités suisses ont suspendu leurs partenariats institutionnels avec la Russie. C’est le cas notamment de l’Université de Genève. Une école établie à Genève poursuit toutefois sa collaboration avec l’Institut d’Etat des relations internationales de Moscou (MGIMO), l’alma mater des élites russes, pour délivrer en commun un double diplôme «suisse» et «russe». Dirigée par des Russes et destinée à des étudiants russophones, elle opère en toute légalité, les universités russes n’étant pas sous le coup des sanctions. Le Temps a cherché à comprendre son fonctionnement au fil de ses changements de nom pour mieux déterminer ses origines. Vu de Moscou, il s’agit d’une filiale. Les avocats de cette école nient toutefois toute dépendance envers la Russie. Bonne lecture,  | – Frédéric Koller |
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À BERNE ET DANS LES CANTONS |
VOTRE MAGAZINE «Drag Race»: derrière les paillettes, le phénomène
 Vendredi prochain débutera la deuxième saison de «Drag Race France», émission de téléréalité ultrapopulaire mettant en scène des reines du travestissement. Un ovni né aux Etats-Unis, devenu succès culturel et combat politique |
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![An international team of scientists have used data collected by the NASA/ESA/CSA James Webb Space Telescope to detect a molecule known as the methyl cation (CH3+) for the first time, located in the protoplanetary disc surrounding a young star. They accomplished this feat with a cross-disciplinary expert analysis, including key input from laboratory spectroscopists. The vital role of CH3+ in interstellar carbon chemistry has been predicted since the 1970s, but Webb’s unique capabilities have finally made observing it possible — in a region of space where planets capable of accommodating life could eventually form. This image is NIRCam’s view of the Orion Bar region studied by the team of astronomers. Bathed in harsh ultraviolet light from the stars of the Trapezium Cluster, it is an area of intense activity, with star formation and active astrochemistry. This made it a perfect place to study the exact impact that ultraviolet radiation has on the molecular makeup of the discs of gas and dust that surround new stars. The radiation erodes the nebula’s gas and dust in a process known as photoevaporation; this creates the rich tapestry of cavities and filaments that fill the view. The radiation also ionises the molecules, causing them to emit light — not only does this create a beautiful vista, it also allows astronomers to study the molecules using the spectrum of their emitted light obtained with Webb’s MIRI and NIRSpec instruments. The two very large, bright stars are two of the three stars in the θ² Orionis system — the Trapezium Cluster is also known as θ¹ Orionis. The brightest star here, θ² Orionis A, is surrounded by particularly bright and red puffs of dust, which are reflecting the star’s light towards Earth. Its great brightness — it is visible with the naked eye — is due to the fact that θ² Orionis A is itself a ternary system made of three closely bound bright stars. There are more proplyds visible in this image than just d203-506 — the Orion Nebula is replete with such new stars. In the very top left, a tiny star is visible within a long, dusty cocoon. This globule has formed from the star’s protoplanetary disc, as the disc is broken down by the energetic radiation of the Trapezium Cluster. Around the globule, a round shockwave is strikingly visible moving through the gas of the Orion Nebula. [Image description: A nebula made of many layers of cloudy, colourful material. The top-left side of the image is brightly lit, filled with wispy, thin material in pale shades of pink and blue. A thick bar of denser, cloudier material crosses diagonally at the bottom right. It begins as orange and grows darker and sparser down to the corner. Two very bright stars, with very long diffraction spikes, lie in this sparse area.]](https://blogger.googleusercontent.com/img/proxy/AVvXsEiWc2dUSpStIO3DylCdVaneXonzOsR4lz2POvbsdKneFkiA-CrZKIEzdLKjJqXWV8sTtMflUMPH_BSJ3To9aUvnAT2q0mlGQd2cppMiA0gc0xjpziKEBkYOtOCFGnFkJqTvHGFUpT83AhrZ9juN77Kt5gDwntk5om6h8ajryDGQFyaK9sfSsnADDn2uQlHR36qQ5-4hiYOGTtCfGe5AfixeNfscXCeEX8ecxVrIKIFbEx55Ohn54A0NRkkrb5Gmlv0Yyzikl0oPOA=s0-d-e1-ft)
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