Ce département français interdit ChatGPT et Gemini mais autorise une autre IA américaine

La charte a été votée le 29 mai à Tours, lors de la séance plénière du Conseil départemental. Copilot Chat est intégré nativement à la suite Microsoft que la collectivité utilise au quotidien. Pour les autres IA, c’est fini. Une mention de données sensibles ou confidentielles dans les requêtes adressées à Copilot est aussi proscrite […]

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SPHEREx confirms predictions for artificial satellite trail pollution in Low Earth Orbit

The number of artificial satellites in Low Earth Orbit (LEO) is increasing at an exponential rate since 2019. Satellites are visible to both ground and space telescopes, and their bright emission in optical, infrared, and radio-wavelengths contaminate astronomical observations, degrading the data's scientific value. Recent simulations forecast that if all satellite constellations listed in current launch manifests are deployed to LEO, satellite trails will appear in up to 96\% of the images obtained by most space telescopes. In this article, we use the recently launched SPHEREx space telescope to corroborate these models. SPHEREx observations obtained between May and September 2025 indicate that $73.3^{+1.3}_{-1.2}\%$ of the images already show satellite trail contamination, with an average number of $N=2.18^{+0.11}_{-0.09}$ trails per exposure, providing observational validation of the published light contamination models. The observed satellite trails display highly inclined trajectories in agreement with the simulated ones. We discuss potential data reduction mitigation methods, and provide an updated satellite light pollution forecast for \emph{Hubble} and SPHEREx including the newer satellite constellations proposed in early 2026.

Fried Fish (@[email protected])

Attached: 1 image L'IFOP fait passer des échantillons de 116 enseignants à 580 grâce à la magie de l'IA. Bientôt, les IA prédiront les réponses et y aura même plus besoin de se faire suer à poser des questions à des vraies personnes. Plus d'infos ici: https://bsky.app/profile/did:plc:ewnld7ifjwcwadrvmpboitgg/post/3mmo4ofxqoc2o #IA

Falling space debris poses an escalating risk as spacecraft get stronger and more heat resistant

Some engineers are prioritizing ‘design for demise’ and planning satellites that are more likely to completely burn up in Earth’s atmosphere at the end of their lifespan.