La recherche française est-elle en train de perdre son avenir ? L’alerte lancée par Francoise Combes, présidente de l’Académie des sciences, dans La Gazette du LABORATOIRE, mérite toute notre attention. Lire l'article : lnkd.in/eJBFw39k

Back in Meudon observatory

I was delighted to finally meet Pr. Françoise Combes, astrophycist, honorary professor in Collège de France and president of @academiesciences.bsky.social What a lovely, inspiring person. I can't thank her enough for her help in my work on quasars and 3C273. 💙

Mixed to bad weather conditions this thursday night, but I managed to get data for this exoplanet. A hot jupiter orbiting its star in 1.7 day ! Transit depth about 1,29%. Still work to do ! 💪 #VariSky_Observatory #Astronomy #Science #Astrosci #exoplanet #ExoClock @arieltelescope.bsky.social 🛰️

💚 #Frenchalps #Devoluy #Springwalk #nature

Day off ! What a nice scenery to chill and read science 🤩 #nature #frenchalps #Dévoluy #chill

SN 2026kid, a type II supernova (death of a massive star) discovered on 22.04 in the galaxy NGC 5906, some 46 Mly away. The SN appears considerably reddened, probably by interactions with its circumstellar medium. Let the follow-up campaing begin ! 🤩 #astronomy #extragalactic_astronomy #astrosci

It's "calibration frames" time 😄 Thanks to the Geoptik flatbox and the Ekos utilitary, it is nice and simple 👌 #astronomy #science #photometry

SN2026fvx, 21 days apart. Measured the last night at mag 12,7 ! Impressive. The thermonuclear explosion now outshines all its host galaxy. #supernova #SNIa #astronomy #extragalactic #trensient #science

🕵️ Nouvelle piste pour la matière noire: Yann Mambrini (IJCLab) et ses collègues montrent qu’elle a pu se former plus tôt dans l’histoire de l’Univers que ce qui est admis jusqu’à présent. Une hypothèse testable par les expériences existantes. www.in2p3.cnrs.fr/fr... @cnrs-paris-saclay.bsky.socia

Quasars survey tonight ! Still working on the workflow for this project. #astronomy #science #extragalactic_astronomy #quasar #AGN

#Communiqué 🗞️ La collaboration South Pole Telescope (SPT) publie les résultats d’analyse des deux premières années d’observations du télescope 🔭 👉 www.cnrs.fr/fr/presse/so...

Sunworks ! ☀️ Calculating a coronal mass ejection speed. More than 700km/s 😬 #astronomy #solarastronomy #science #practicalworks #solaractivity #AstroImageJ

Paris-Meudon Observatory. With the great old refractor dome, a real castle overlooking Paris. What a great feeling to have courses in this place of great science history ❤️ #astronomy #obspm #science #Paris

SN 2026fvx. Type Ia supernova discovered by LAST observatory on march 17th on mag 19.6. Now two days later, about mag15.8 ! Located in galaxy NGC4205 in Draco. #Astronomy #Space #Supernova #Science

SN 2026dix, type II supernova discovered mid-february in the galaxy NGC 3913. Captured here in tricky conditions with high clouds. Managed to measure it at mag 15,28+/-0.073 with clear filter. Being 54M lightyears away... you could imagine the power of the explosion ! #astronomy #supernova #science

AE Ursae Major, a fast pulsating SXPhe-type blue Population-II star. <3 First proper lightcurve for the VariSky Observatory. Still lot of work to do on the hardware. #astronomy #Space #Science #pulsatingstar

First light for the VariSky Observatory ! A lot of things missing (focuser, coma-coreector...), not the definitive camera... But least... It works ! A little time to test pointing and tracking, the acquisition process with Ekos/KStars. Doing it with an exoplanet transit and NGC2903. #astronomy ❤️🌌

International women and girls in science day ! ✊ #science #astronomy #history #pioneers

Finally some clear skies !! Not for long - less than an hour - but so good to see again the great ol' Jupiter in all its glory 😍 That was the occasion to test #ekos #kstars for driving the EQ6R mount. What a great mount it is ! Precise an smooth as silk. Can't wait for more!! #astronomy

Working on the integration of #astrocolibri alerts in VariSky Planner ! Thanks @fabianschussler.bsky.social for the help 🖖

Thanks a lot, Santa ! #astronomy #science #books

Work in progress... Variable sources observation planner. Still a lot of work to do. #astronomy #science #python

Working on "VariSky Planner" : an observation planner dedicated to variable sources, based on a local database and including scoring algorithm and an adaptive time-sequence. I think it will become a nice educationnal tool. #astronomy #science #python

Eruption record dans un noyau galactique actif à lire : www.ca-se-passe-la-haut.fr/2025/11/erup... à écouter : casepasselahaut.lepodcast.fr/numero-1732-... #science #astrophysique #trounoir #galaxies #podcast

La version papier, c'est par là : www.thebookedition.com/fr/3c-273-un... ☺️

Observing Saturn tonight with the 102ED f11 ! 180x and 220x with TeleVue and Taka eyepieces. I think the Taka is better than the TVO... Need more observing time ! #astronomy #takahashi #televue #tsoptics #refractorlovers

Tout est dans le titre 😊 Des quasars & de la photométrie, à destination des amateurs de sciences ! ça se passe par là 👉https://limewire.com/d/Jbwju#IIhopbEgHx #astronomie #astrophysique #science #space #extragalactic #astronomy #trousnoirs #quasars

Old but gold ! ✨ TeleVue Radian, really nice planetary eypieces, sharp and comfy ❤️ #astronomy #televue #visualastronomy #stargazer

Une rencontre qui s'annonce passionnante ! #astronomy #blackholes #science #cnrs

Sunset with storm coming 💙 #Ardèche #summer #weather #storm #godrays

Double stars observation last night, with some tight ones in Draco, and a beautiful Alpha Herculis looking like copper sparkles. Awesome optics of this TS102 f11 ED ! #astronomy #refractorlover #doublestars #TSOptics #visualastronomy

🎥 Dans le dernier hors-série de la saison des Déconspirateurs, @davidmedioni.bsky.social reçoit le Dr Jean-David Zeitoun pour parler consensus scientifique, "Big Pharma", vaccins, ARN messager, épidémiologie, climat et IA 👇

Morning moon observation ! With new TS102 F11 ED !! :D A really nice long ED refractor you don't see too many often. Very promising for planets observations. #astronomy #refractor #moonobservation

Observing our magnificent satellite the Moon. Nice and crisp view with TS Optics 80 APO + TeleVue Radian 6 🌔 #Astronomy #refractorlover #teleVueOptics #TSOptics #moon

Our Ariel mission will take us from 'discovering' towards 'studying and understanding' exoplanets. The mission will survey about 1000 exoplanets, ranging from rocky planets to gas giants, to better understand the link between exoplanets and their parent stars 👉 www.esa.int/Science_Expl... 🔭 🧪

Working on five and a half years of observations of quasar 3C 273, using open data from LCO Global Obs, AstroImageJ, Peranso and a little bit of Astropy. 🤩Time to read the extensive litterature on this bright and intriguing QSO ! #astronomy #extragalactic #science #AstroSci

Six monthes survey of what it is thought to be a binary supermassive blackholes system, using LCO Global Obs open datas ! Photometry using AIJ. #astronomy #extragalacticastronomy #supermassiveblackhole #science

PDS 456 : le trou noir supermassif qui produit un vent par paquets www.youtube.com/watch?v=BHxQ... #science #astrophysique #podcast

Two years ago... A giant star collapsed in the M101 galaxy, resulting in a magnificent Type-II supernova named sn2023ixf. I searched the LCO Global Obs archives and found valuable datas from that period, and managed to calculate a lightcurve for this exceptionnal event. #astronomy #extragalactic

Très intéressant ! A noter que les images vont de 2 ans à 10 ans d'intégration. Et ces gamma de plus de 31 MeV viennent des interactions des rayons cosmiques avec le regolithe lunaire. (La radioactivité naturelle de la Lune produit des gamma de moins de 5 MeV... )

Ma dernière lecture, un vrai coup de cœur ! @hervedole.bsky.social est aussi agréable à lire qu'à écouter en conférence 🙂 Il réussit à faire passer des concepts compliqués en peu de mots et de manière limpide. À mettre entre toutes les mains de celles et ceux qui ont les yeux tournés vers le ciel 🤩

éclipse partielle de soleil aujourd'hui :) En jonglant entre les nuages... #solareclipse #astronomy

Ma dernière lecture. Une superbe histoire des sciences à travers l'épopée de la plus célèbre des formules mathématiques ! Quel talent de M. Riazuelo d'arriver à donner vie à ses récits... Et nous faire nous sentir intelligents à sa lecture ! 💙

Nouvelles lectures ! Avec une couverture au superbe humour anglais 🇬🇧 #space.science #astronomy

Lecture du moment 👍

Les microquasars de faible masse sont aussi des sources de rayons cosmiques à lire : www.ca-se-passe-la-haut.fr/2025/02/les-... à écouter : casepasselahaut.lepodcast.fr/numero-1698-... #science #astrophysique #podcast

2025 vient d'être déclarée année de la quantique par l'ONU ! L’occasion rêvée de découvrir les ressources gratuites qu'on a conçues. Si vous aimez, partagez largement. Après tout, ce n'est pas tous les jours qu'on inaugure une année quantique ! vulgarisation.fr/projet/annee...