🎂 Le célèbre Deep Field de Hubble (photo 1) fête aujourd'hui ses 30 ans !
🌠 Entre le 18 et le 28 décembre 1995, le télescope spatial Hubble observait, pendant plus de 100 heures, une région dans la constellation de la Grande Ourse, supposée presque vide mais qui a révélé près de 3000 galaxies.
A 16h sur @franceculture.fr Sciences Chrono parle de l'histoire des images astronomiques. Comment l'astronomie s'est-elle construite autour d'un imaginaire visuel qui n'a cessé de marquer les mentalités au point de devenir l'une des sciences les plus populaires ?
www.radiofrance.fr/francecultur...
✨ BIG NEWS 🤗
Le Consortium Euclid vient de publier les données de la plus grande simulation informatique d'univers jamais faite !
Un thread d'explications arrive dans les prochains jours 😉 En attendant, n'hésitez pas à consulter notre communiqué de presse : www.euclid-ec.org/public/press...
17/09/2025:
I found this amazing website from the Institute for Computational Cosmology (Durham University in the UK): www.icc.dur.ac.uk/~tt/Lectures...
2/4 Deneb brille au cœur de la constellation du Cygne, l’une des régions les plus riches, les plus denses de la voûte céleste, un vertigineux chaos d'astres disparus, de trous noirs invisibles, de langes d’étoiles naissantes, de limbes d’étoiles à naître.
01/08/2025:
If I had a 5-figure salary, all these books would be in my library. 🥲
La semaine prochaine, on part pour une semaine cosmos ! Au menu : Mercure et BepiColombo / Ondes gravitationnelles et LISA / Andromède / Trous noirs chevelus / Grand entretien avec James L. Green de la NASA. Ce sera du lundi au vendredi à 16h sur @franceculture.fr
NASA’s Parker Solar Probe Snaps Closest-Ever Images to Sun
Newly released images - taken closer to the Sun than we’ve ever been before - are helping scientists better understand the Sun’s influence across the solar system, including events that can affect Earth. 🧪🔭
science.nasa.gov/science-rese...
Terre et Lune
Quelle image de la Terre et la Lune par la sonde chinoise Chang'e-6!!
Citizen Astronomers around the world confirmed a rare "temperate Jupiter" 400 light-years away, proving teamwork is changing space exploration! Shout out to @SETIInstitute and @Unistellar! Read more: science.unistellar.com/blog/citizen-astronomers...
06/07/2025:
A Silhouette Hunts for Dark Energy... Can you spot the "Silhouette"?
"NSF NOIRLab (formally named the National Optical-Infrared Astronomy Research Laboratory) is the US national center for ground-based, nighttime optical astronomy."
noirlab.edu/public/about/
That's too bad, it would have been organised in a cool garden today: fr.m.wikipedia.org/wiki/Jardin_...
05/07/2025:
Yesterday the sky was bluuuue, but today it's too cloudy to go to the event "Paris sous les étoiles" (organised almost every weekend during July and August) 🤧: www.afastronomie.fr/paris
Prochains résultats le 1er octobre 2025!
夜明けに輝く天空の宝石たち。
ひときわ明るい明けの明星（金星）と、すばるが並んで夜明け前の空に昇りました。
写真左の星の集まりがすばるです。
（先日、沖縄県にて撮影）
今日もお疲れさまでした。
04/07/2025:
I would like to talk about the Parisian "Ursa Major" chocolate factory but it would take me too much time to write about it :(
(Yes, Ursa Major like the Great Bear constellation)
www.ursamajorchocolats.com.
I have to finish this later🤞
But today I am too tired to really think about astronomy. I saw that there were no clouds during the day, the sky was 💙 blue as a blue Northern Hemisphere summer sky. I did not really notice the Sun. I don't know if I will look at the stars tonight (?).
04/07/2025:
The point of this account is to try to think about astronomy on a daily basis, because life gets in the way of astronomy as a hobby 😔. On this account I only follow accounts related to it, so at least when I log in here I will see news, knowledge, pictures related to it ❣️🔭🌌.
Looking for bars in faraway galaxies
Hi all! My name is Tobias Géron, I'm a postdoctoral researcher at the University of Toronto. I've been using Galaxy Zoo for a few years now to study bars in galaxies. Bars seem to be very common structures in the present-day Universe, with roughly half of all…
Interstellar visitor confirmed.
#A11pl3Z is now known as 3I/ATLAS. It is only the third confirmed object from beyond our solar system.
02/07/2025:
I also have to share this post today, coz I watched the "Scope" show yesterday (well, I mostly LISTENED to it coz I was too tired to watch it).
The post is a thread of the pictures taken at the Haute-Provence Observatory during the show 🤩: Albireo binary star, the Ring Nebula, etc 🔽
To be honest I have never seen a sky like this with so many stars 😂🥲 (but this is a photograph, so it also might be slightly different than what the eyes can see)
It has been a while since I left the city and saw more stars like on the picture below which I found on Astrobin (credit to Christian Andres):
app.astrobin.com/i/3ie9ml
Christian Andres picture on Astrobin. The Milky Way from the Seeland region in Switzerland.
02/07/2025:
Yes, I thought about astronomy. Actually, I just wanted to say that I live in a big city (near Paris 🙄) so light pollution is strong there and we can spot only a few stars (sometimes planet) each night.
The Alpha Centauri stars (Alpha Centauri is a star system of 3 stars) are the closest stars to our Sun, at 4.36 light-years, that is 41 million million kilometres.
More info: www.eso.org/public/franc...
01/07/2025:
A little bit, but I am too tired to write something structured 😴
*Calçada
@luiscalcada.bsky.social thank you for your work 🙏
