Protecting Planet Earth’s Skies: A4E's Statement on Proposed Large Satellite Constellations - a4e.org Astronomers for Planet Earth (A4E) is an international grassroots movement of astronomy students, educators, amateurs and scientists, working to address the climate crisis from an astronomical perspec...

Astronomers for Planet Earth are submitting a statement about some of the proposed megaconstellations that would ruin ground-based astronomy to the FCC.

You can read the statement below: 🔭☄️

Starting this Friday, four separate #JWST programmes will be exploring physical processes in Jupiter's atmosphere and ionosphere. We're asking amateur astronomers to help provide context imaging over the next few weeks to understand how the atmosphere is changing with time. #planetaryscience

🚂 Sauvons les trains de nuit Paris-Berlin et Paris-Vienne Signez la pétition maintenant !

🚂 A peine lancés et déjà supprimés ? Sauvons les trains de nuit Paris-Berlin et Paris-Vienne, un voyage bas-carbone largement plébiscité par ses utilisateurs
agir.greenvoice.fr/petitions/sa...

🔴 [Bilan été]

3ᵉ été le plus chaud depuis 1900 avec 2 épisodes caniculaires, 27 jours en vague de chaleur.

Les températures maximales au-dessus des normales 2 jours sur 3

Le seuil des 35 °C atteint sur plus de 80 % du territoire et celui des 40 °C sur plus de 20 %

meteofrance.com/actualites-e...

A white protoplanetary disc at the centre of the picture takes up most of the frame. The elliptical cloud of dust and gas consists of some gaps creating a ring-like structure to the cloud. In one of the larger gaps/rings a little dot (a planet) is visible.

A very hungry planet! 🪐

What appears to be a ripple in space is actually a newborn planet, eating its way through its dusty cradle around a younger version of our Sun 🌞

Read more: https://www.eso.org/public/images/potw2534a/

🔭 🧪 #exoplanets
📷 ESO/R. van Capelleveen et al.

IPD-STEMA ULiège's Sector Council for Research and Development in Science and Technology is offering a postdoctoral fellowship program, "IPD-STEMA", for bright young PhDs with international mobility prospects w...

In case this could be of interest to you or anyone else in here: we have 2-year postdoc positions open right now at ULiege, plus another call for more prestigious 3-year postdoc fellowships from the FNRS coming later in January. www.recherche.uliege.be/cms/c_133521...

An image of a nearby star and its vicinity. The star itself has been blocked out and its bright light has been removed. A dashed circle with a star symbol at the centre of the image marks the star’s location. A fuzzy blue disc surrounds the star. An orange spot, near to the star and inside this disc, is identified as a planet orbiting the star. A fainter orange spot far from the centre marks a distant star.

The NASA/ESA/CSA James Webb Space Telescope has found evidence of a cold, Saturn-mass planet around the star TWA 7, seemingly sculpting its disc of debris!

If confirmed, this would be Webb’s first direct image discovery of a planet.

Read more 👉 www.esa.int/Science_Expl...
🔭 🧪 ☄️

A&A page charges for non-sponsoring countries: 150€

L’intelligence artificielle, nouvelle alliée des chasseurs d’exoplanètes L’année 2025 marque le 30e anniversaire de la découverte de « 51 Pegasi b », la première exoplanète, une planète en orbite autour d’une étoile, jamais détectée. Depuis, plus de 5.000 ont été …

Grâce au deep learning, l’IA aide les astronomes à détecter directement des mondes lointains, en améliorant les images des télescopes et en repérant des planètes invisibles à l’œil nu ✨ @oabsil.bsky.social @dailysciencebe.bsky.social
dailyscience.be/12/05/2025/3...

New ESO analysis confirms severe damage from industrial complex planned near Paranal An in-depth technical analysis by the European Southern Observatory (ESO) has evaluated the impact of the INNA megaproject on the facilities at the Paranal Observatory, Chile — and the results are ala...

🚨 ESO analysis confirms that the INNA industrial megaproject would have a devastating and irreversible impact on the facilities at Paranal Observatory.

Full story ➡️ www.eso.org/public/news/...
Details in 🧵 below 👇
🧪 🔭 #astrosci 1/

Project Scientist Project Scientist

Astro job alert! 🚨🔭 @science.esa.int is hiring a Project Scientist for NASA's Roman mission, to join our ESA office here at @spacetelescope.bsky.social in Baltimore! Check out the job ad and please share with anyone who might be interested! jobs.esa.int/job/Baltimor...

World's darkest and clearest skies at risk from industrial megaproject On December 24th, AES Andes, a subsidiary of the US power company AES Corporation, submitted a project for a massive industrial complex for environmental impact assessment. This complex threatens the pristine skies above ESO’s Paranal Observatory in Chile’s Atacama Desert, the darkest and clearest of any astronomical observatory in the world [1]. The industrial megaproject is planned to be located just 5 to 11 kilometres from telescopes at Paranal, which would cause irreparable damage to astronomical observations, in particular due to light pollution emitted throughout the project’s operational life. Relocating the complex would save one of Earth's last truly pristine dark skies.

The best dark sky in the world - the Atacama Desert in Chile, which hosts many @eso.org telescopes - is under threat from an industrial project. 🔭

Astronomers can sign a petition in favour of moving the planned industrial project: docs.google.com/forms/d/e/1F...

World's darkest and clearest skies at risk from industrial megaproject On December 24th, AES Andes, a subsidiary of the US power company AES Corporation, submitted a project for a massive industrial complex for environmental impact assessment. This complex threatens the pristine skies above ESO’s Paranal Observatory in Chile’s Atacama Desert, the darkest and clearest of any astronomical observatory in the world [1]. The industrial megaproject is planned to be located just 5 to 11 kilometres from telescopes at Paranal, which would cause irreparable damage to astronomical observations, in particular due to light pollution emitted throughout the project’s operational life. Relocating the complex would save one of Earth's last truly pristine dark skies.

The skies above Paranal are at risk from a proposed industrial megaproject. 

This would be located in the vicinity of ESO's Observatory. If constructed, it would irreparably impact astronomical observations.

Read more: https://www.eso.org/public/news/eso2501/
🔭 

📷 ESO/P. Horálek

📣 Hiring! I am looking for PhD/postdoc candidates to work on foundation models for science at @ULiege, with a special focus on weather and climate systems. 🌏 Three positions are open around deep learning, physics-informed FMs and inverse problems with FMs.

Elon Musk takes aim at Wikipedia The billionaire has become one of the most prominent supporters of President-elect Donald Trump.

If you've never donated to Wikipedia, now's the time. Elon Musk is attacking it because it's one of the only sources of honest, curated information that he can't control.
www.newsweek.com/elon-musk-ta...

Interested in exoplanet imaging? Please consider submitting an entry to the phase II of the Exoplanet Imaging Data Challenge, and gain eternal glory for extracting the position and spectrum of injected exoplanets in a few VLT/SPHERE and Gemini/GPI data sets! 🔭🪐 exoplanet-imaging-challenge.github.io

Using JWST, a team of researchers including scientists from ULiège has succeeded in measuring the isotopes of ammonia in the atmosphere of a cold brown dwarf. This study shows that the isotopic abundance of ammonia can be used to study gas giant formation. www.psilab.uliege.be/cms/c_120604...