Yaël Moussouni
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ial-2.bsky.social
Yaël Moussouni
@ial-2.bsky.social
26 followers 70 following 11 posts
📚 PhD student in Astrophysics at the Observatoire astronomique de Strasbourg ‪(@obsstrasbourg.bsky.social‬)

🔭 Scientific animator and mediator at the Centre Astro de St.-Michel-l'Observatoire, in Haute-Provence (https://www.centre-astro.com/)
Posts Replies Media Videos
Reposted by Yaël Moussouni
ec-euclid.bsky.social
Au revoir Yannick!

Dear colleagues and friends,

It is with the greatest sadness that we announce the passing of Yannick Mellier, which occurred during the night between Friday and Saturday. His death leaves a huge void within the consortium and our community.

1/3

#astronomy #space #ESA
December 21, 2025 at 10:51 AM
Reposted by Yaël Moussouni
amichaut.bsky.social
🚨 Je cherche des chercheur-ses de toutes disciplines pour un doc radio pour parler de leur sujet de recherche mais aussi de leur quotidien (une journée type au labo). Contrainte supplémentaire, le labo doit être hors de Paris.
Plus d'infos : forms.gle/hw9wH2p5UH4A...
Interview de chercheur-ses pour doc radio
À l'occasion d'un projet de documentaire radio sur France Culture, je cherche des chercheur-ses représentant une diversité de disciplines mais également de statuts à interviewer. L'idée est de partir...
forms.gle
December 5, 2025 at 1:01 PM
Reposted by Yaël Moussouni
obsstrasbourg.bsky.social
L'Observatoire astronomique de Strasbourg a eu le plaisir d'accueillir les Rencontres Euclid-France 2025, avec une journée au Planétarium du Jardin des Sciences où les données Euclid ont été montrées en pleine voûte.

euclidfrance25.sciencesconf.org/program
Rencontres Euclid-France 2025
November 21, 2025 at 3:26 PM
Reposted by Yaël Moussouni
obsstrasbourg.bsky.social
La semaine prochaine, @nfmartin1980.bsky.social et Claire Guillaume feront un spectacle sur l'archéologie galactique avec les courants d’étoiles, au Planétarium du Jardin des Sciences de @unistra.fr, avec les Echappées inattendues @cnrs.fr les 4 et 7/10.
jardin-sciences.unistra.fr/programmatio...
L’archéologie galactique avec les courants d’étoiles
Un spectacle proposé dans le cadre des Echappées inattendues du CNRS : embarquez pour un voyage immersif depuis l’orbite terrestre jusqu’aux confins de la Voie lactée. Découvrez comment les astronomes...
jardin-sciences.unistra.fr
October 27, 2025 at 4:03 PM
Reposted by Yaël Moussouni
bochthomas.bsky.social
While at CDS, the Aladin project mainly deals with deep sky images, we also map planetary surfaces.

We released the HiPS of China's Tianwen-1 MoRIC images, a true-color map of Mars at 76m resolution.

Interact with this awesome dataset in Aladin Lite at alasky.cds.unistra.fr/Planets/CDS_...
September 18, 2025 at 8:39 AM
Reposted by Yaël Moussouni
obsstrasbourg.bsky.social
Un petit reportage pour en savoir un peu plus sur l'usage des données du CDS @cdsportal.bsky.social au Planétarium :
savoirs.unistra.fr/eclairage/le...
Le Planétarium, un outil pour la projection de données scientifiques
Unique planétarium universitaire en France, le Planétarium du Jardin des Sciences de l'Université de Strasbourg entretient un lien direct avec la recherche scientifique. Ses équipes travaillent notamm...
savoirs.unistra.fr
September 1, 2025 at 1:30 PM
Reposted by Yaël Moussouni
emily.space
Finding out about Gaia at #EAS2025Cork! ☄️

Just announced: Gaia DR4 will be released in December 2026!
A photo of the slide with the December 2026 release date
June 26, 2025 at 2:11 PM
Reposted by Yaël Moussouni
astrokatie.com
If we manage to work well together, we get to learn a little bit about it
June 23, 2025 at 5:47 PM
Reposted by Yaël Moussouni
astrokatie.com
I frequently take comfort in the fact that the Universe is vast and beautiful and entirely unaffected by petty human foolishness
June 23, 2025 at 5:46 PM
Reposted by Yaël Moussouni
vrubinobs.bsky.social
Introducing...your sneak peek at the cosmos captured by NSF–DOE Vera C. Rubin Observatory!

Can you guess these regions of sky?

This is just a small peek...join us at 11am US EDT for your full First Look at how Rubin will #CaptureTheCosmos! 🔭🧪

#RubinFirstLook
ls.st/rubin-first-look-livestream
A sprawling, textured field of galaxies scattered across the deep black of space. It is filled with the delicate smudges and glowing cores of galaxies of many shapes, sizes and colors, as well as the bright multi-colored points of stars. The image focuses on a collection of interacting galaxies connected by delicate streams of stars. At top center lies a large elliptical galaxy that is dense and smooth, like a polished stone glowing with golden light. Like delicate spider silk or stretched taffy, these stellar bridges link the large elliptical to the few larger galaxies beneath, evidence of past collisions. All throughout the image, thousands of galaxies gather in clusters or are spread throughout, like glittering gems strewn on a table. Some are sharp-edged and spiral, like coiled ribbons; others round and diffuse, like polished pebbles. Still others are just smudges of various colors against the black of space. The background is peppered with pinpoint stars in reds, yellows, and blues, crisp against the velvet black. A cosmic tapestry of glowing tan and pink gas clouds with dark dust lanes. In the upper right, the Trifid Nebula resembles a small flower in space. Its soft, pinkish gas petals are surrounded by blue gas, and streaked with dark, finger-like veins of dust that divide it into three parts. It radiates a gentle, misty glow, diffuse and soft like the warmth of breath on a cold hand. To the lower left, the much larger Lagoon Nebula stretches wide like a churning sea of magenta gas, with bright blue, knotted clumps sprinkled throughout where new stars are born. Both nebulae are embedded in a soft tan backdrop of gas that is brighter on the left than on the right, etched with dark tendrils of dust and sprinkled with the pinpricks of millions of stars. A sprawling, textured field of galaxies scattered across the deep black of space. It is filled with the delicate smudges and glowing cores of galaxies of many shapes, sizes and colors, as well as the bright multi-colored points of stars. To the lower left is a region filled with the hundreds of golden glittering gems of a distant galaxy cluster. In the foreground, below and right of center, two blue spiral galaxies look like eyes beneath the entangled mass of a triple galaxy merger in the upper right. A few bright blue points of foreground stars pierce the glittering tapestry. All throughout the image, thousands of galaxies gather in clusters or are spread throughout, like glittering gems strewn on a table. Some are sharp-edged and spiral, like coiled ribbons; others round and diffuse, like polished pebbles. Still others are just smudges of various colors against the black of space. The background is peppered with pinpoint stars in reds, yellows, and blues, crisp against the velvet black.
June 23, 2025 at 4:06 AM
Reposted by Yaël Moussouni
eso.org
New exoplanet classification just dropped 🔭🧪

xkcd.com/3103/
An xkcd cartoon titled “Typical exoplanet system”. There’s a drawing of a star and several weird planets orbiting around it. The planets are labeled as follows: Giant planet orbiting so close that it’s actually rolling on the star’s surface. Hot Jupiter. Mini Neptune. Planet that could be habitable, if there’s a form of life that hates water but loves acid and being on fire. Cold Jupiter. Potentially habitable void. Hot Mars. Planet that may actually be in the habitable zone, according to a very optimistic modelling paper by some desperate postdocs. There’s a pulsar here but it’s probably fine. A water world paradise with beautiful oceans and warm- wait, no, we just got new measurements, it’s a hellish steam oven. Mini Pluto. Lukewarm Jupiter. Earthlike data artifact. Planet whose atmosphere is confirmed to contain atoms. Wet Saturn. Either a gas giant or a fist-sized rock, depending which calibration method you use. Faint dust cloud that will cause several papers to be retracted. Somehow this whole system is smaller than the orbit of Mercury?! Planet whose surface may host conditions suitable for rocks. Mouseover text: Sure, this exoplanet we discovered may seem hostile to life, but our calculations suggest it’s actually in the accretion disc’s habitable zone.
June 17, 2025 at 1:35 PM
Reposted by Yaël Moussouni
corentinduval.bsky.social
🔴 Sauvons le Palais de la découverte !

Le Palais est en danger, menacé d’expulsion. Signez et partagez cette pétition au plus grand nombre pour préserver ce haut lieu des sciences à Paris ⤵️

www.change.org/p/sauvons-le...
Signez la pétition
Sauvons le Palais de la découverte
www.change.org
June 13, 2025 at 12:10 PM
ial-2.bsky.social
#Introduction:
I'm Yaël Moussouni, a #MSc student (and #PhD student from October) in #astrophysics at Strasbourg, working on extra-galactic globular clusters and their stellar populations (with @karinavoggel.bsky.social and Ariane Lançon)

I'm also involved in #astronomy outreach during summers.
June 6, 2025 at 4:13 PM