Une galaxie trop vieille pour son âge remet en cause le Big Bang Le télescope a capté une lumière émise il y a 13,5 milliards d’années par une galaxie déjà trop bien formée pour son âge.

Webb repère une galaxie record à l’aube du cosmos : lumière vieille de ~13,5 milliards d’années, l’univers se raconte en direct
www.24heures.ch/james-webb-l...
#Space #Science #Innovation #Astrophysics #JWST #GalaxyRecord #CosmicDawn #MoMz14

Original post on mastodon.social

Webb repère une galaxie record à l’aube du cosmos : lumière vieille de ~13,5 milliards d’années, l’univers se raconte en direct
www.24heures.ch/james-webb-la-galaxie-la...
#Space #Science #Innovation #Astrophysics #JWST #GalaxyRecord #CosmicDawn […]

NITheCS Colloquium: 'On the Quest for Reliable Measurements of Cosmic Dawn'
Dr Steven Murray (Stellenbosch University)
📅 Monday, 20 April 2026
⏰ 16h00–17h00 SAST
Attend online or in person:
nithecs-ac-za.zoom.us/webinar/regi...
#Cosmology #CosmicDawn #HERA #SKA #Astronomy

𝐀ctrice 𝐝𝐮 𝐉our

𝐄𝐦𝐦𝐚𝐧𝐮𝐞𝐥𝐥𝐞 𝐂𝐡𝐫𝐢𝐪𝐮𝐢
Actrice Canadienne

#EmmanuelleChriqui c'est plus de 30 Films

#ActriceDuJour #actrice #cinegenres #cinema
#DétourMortel #RienQuePourVosCheveux #FortBliss #CosmicDawn

𝐄n 𝐒avoir 𝐏lus:
www.instagram.com/p/DWLy2ZwjAJM/

🔭 Record battu: une galaxie observée alors que l'Univers n'avait que 2% de son âge actuel Le télescope spatial James Webb a permis à des astronomes de repérer une galaxie si distante qu'elle nous renvoie...

Punaise ! Une galaxie repérée par James Webb alors que l’Univers n’avait que 2 % de son âge : MoM-z14 bouleverse nos idées sur l’aube cosmique.
www.techno-science.net/actualite/re...
#Space #Science #Innovation #Astrophysics #JWST #MoMz14 #EarlyUniverse #CosmicDawn #JWSTData

Original post on mastodon.social

Punaise ! Une galaxie repérée par James Webb alors que l’Univers n’avait que 2 % de son âge : MoM-z14 bouleverse nos idées sur l’aube cosmique.
www.techno-science.net/actualite/record-battu-g...
#Space #Science #Innovation […]

Black-and-white cartoon of the James Webb Space Telescope floating in space, bracing itself as it pokes a long rod through a cracked wall representing the edge of the early universe. On the other side of the wall, small, wide-eyed, primitive galaxies huddle together in surprise as the barrier breaks, suggesting the telescope intruding earlier into cosmic history than expected.

Webb just spotted a galaxy from 280 million years after the Big Bang 😮 That’s closer to the cosmic dawn than ever before—reshaping what we know about early galaxy formation. #JWST #CosmicDawn scientificinquirer.com/2026/01/30/d...

Cold neutral gas in early universe prompts rethink of galaxy cluster evolution A small group of young researchers at the Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, have, through observations of the early stages of an extremely large galaxy cluster's evolution, shown that the largest structures we know have a different history than previously thought.

🤯 Cosmic mysteries unveiled! Researchers reveal giant galaxy clusters formed differently than we thought—rewriting the story of the universe's largest structures. ✨🌌 #CosmicDawn

Source: phys.org/news/2026-01-cold-neutra...

Dark stars could help solve three pressing puzzles of the high-redshift universe A recent study provides answers to three seemingly disparate yet pressing cosmic dawn puzzles. Specifically, the authors show how dark stars could help explain the unexpected discovery of "blue monster" galaxies, the numerous early overmassive black hole galaxies, and the "little red dots" in images from the James Webb Space Telescope (JWST).

🌌 Dark stars may unlock secrets of the early universe! 🤔 Explaining blue monsters, giant black holes & JWST's red dots. Cosmic dawn revealed! ✨ #CosmicDawn

Source: phys.org/news/2026-01-dark-stars-...

Quand l'Univers s'est éclairé Face au spectacle d'un ciel étoilé, comment imaginer qu'à une époque suivant le Big Bang (il y a 13,8 milliards d'années), l'Univers était plongé dans les ténèbres ?

Les astronomes retracent comment l’Univers s’est éclairé après le Big Bang grâce aux premières étoiles ! www.sciencesetavenir.fr/espace/unive... #Space #Science #Innovation #Astrophysics #CosmicDawn #JWSTData

Les astronomes retracent comment l’Univers s’est éclairé après le Big Bang grâce aux premières étoiles ! www.sciencesetavenir.fr/espace/univers/quand-l-u... #Space #Science #Innovation #Astrophysics #CosmicDawn #JWSTData

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James Webb révèle un Univers jeune déjà en feu : galaxies géantes, étoiles XXL, trous noirs trop tôt. Le Big Bang n’était pas si calme. www.pressreader.com/france/scien... #Space #Astrophysics #JWST #CosmicDawn

PressReader.com - Digital Newspaper & Magazine Subscriptions Digital newsstand featuring 7000+ of the world’s most popular newspapers & magazines. Enjoy unlimited reading on up to 5 devices with 7-day free trial.

James Webb révèle un Univers jeune déjà en feu : galaxies géantes, étoiles XXL, trous noirs trop tôt. Le Big Bang n’était pas si calme. www.pressreader.com/france/sciences-et-aveni... #Space #Astrophysics #JWST #CosmicDawn

La découverte par James Webb d’une étoile morte peu après la naissance de l’Univers bouleverse notre compréhension du cosmos Découvrez comment une supernova observée par JWST éclaire la naissance des premières étoiles de l’Univers.

James Webb repère une étoile morte aux débuts du cosmos. Trop tôt pour mourir, trop vieille pour mentir : le modèle craque. www.science-et-vie.com/ciel-et-espa... #Space #Science #Astrophysics #JWST #CosmicDawn

JWST Detects Record-Breaking Supernova That Erupted Right at The Cosmic Dawn Mind-blowing.

JWST Detects Record-Breaking Supernova That Erupted Right at The Cosmic Dawn #Science #Space #Astrophysics #Supernova #JWST #CosmicDawn

Un puissant signal cosmique vieux de 13 milliards d'années détecté C'est un puissant flash venu du fond de l'Univers qui nous renseigne sur son histoire : le satellite franco-chinois SVOM a capté en mars dernier un rare "sursaut gamma" lié à l'effondrement d'une étoi...

Un flash cosmique vieux de 13 milliards d’années vient d’être capté — le passé de l’Univers se dévoile enfin grâce à SVOM et ce sursaut gamma hors norme. www.sciencesetavenir.fr/espace/unive... #Space #Science #Astrophysics #SVOM #CosmicDawn

Cosmic Dawn: The Devourer’s Hunger As the sun’s fiery edge dipped below the horizon, casting a golden glow over the concrete jungle, a figure emerged from the twilight…

“Cosmic Dawn: The Devourer’s Hunger“ by Shamarie Knight on Medium: medium.com/@ShamarieKni... #CosmicDawn #Galactus #FantasticFour #MarvelComics #CreativeWriting #ShortStory

'Messy' galaxies in the early universe struggled to settle, Webb reveals Astronomers using the James Webb Space Telescope (JWST) have captured the most detailed look yet at how galaxies formed just a few hundred million years after the Big Bang—and found they were far more chaotic and messy than those we see today.

✨JWST reveals baby galaxies born after the Big Bang were wild & messy!🤯 Far from today’s spirals, they were chaotic bursts of creation.🌌 #CosmicDawn

Source: phys.org/news/2025-10-messy-galax...

Little Red Dots Evolutionary Path Revealed: From Dense Galaxies to Supermassive Black Holes New evolutionary theory unifies “stellar-only” and “MBH and galaxy” interpretations of JWST’s L...

#News #Astrophysics #CosmicDawn #EarlyUniverse #GalaxyEvolution […]

[Original post on nasaspacenews.com]

Dwarf Galaxies Identified as Primary Light Sources in Cosmic Dawn

JWST data show early dwarf galaxies outnumber massive ones about 100:1 and emit ionizing UV light roughly four times higher than earlier estimates, per a Nature paper published Feb 2024. getnews.me/dwarf-galaxies-identifie... #dwarfgalaxies #cosmicdawn

Potential smoking gun signature of supermassive dark stars found in JWST data The first stars in the universe formed out of pristine hydrogen and helium clouds, in the first few hundred million years after the Big Bang. New James Webb Space Telescope (JWST) observations reveal that some of the first stars in the universe could have been very different from regular (nuclear fusion-powered) stars, which have been observed and cataloged by astronomers for millennia.

✨First stars born from pure gas after the Big Bang!🤯 JWST reveals they weren’t like *our* stars… radically different & mysterious!🌌 #CosmicDawn

Source: phys.org/news/2025-10-potential-g...

Ancient Galaxies Already Dead by Cosmic Dawn All the science news you can handle in a single feed

Ancient Galaxies Already Dead by Cosmic Dawn #Science #Space #Astronomy #Galaxies #CosmicDawn #Astrophysics

Supermassive black holes observed in the most distant 'dying' massive galaxies, revealing co-evolution Using the wide-field survey capabilities of the Subaru Telescope, astronomers discovered active supermassive black holes, or quasars, in the distant universe and then studied them with the James Webb Space Telescope (JWST). This work has revealed how galaxies and their central black holes grew 12.9 billion years ago.

✨Peering 12.9B years back in time! Subaru & JWST unveil how galaxies & hungry black holes rapidly grew in the early universe!🤯 #CosmicDawn

Source: phys.org/news/2025-09-supermassiv...

a man is making a stop sign with his hands and the words `` hold me now '' written below him . ALT: a man is making a stop sign with his hands and the words `` hold me now '' written below him .

2025. Cosmic Dawn. A shadow in the sky at -500 mK.
No new particles
No CMB conflict
Signal reproduced: –501.3 ± 24.5 mK

#EDGES #CosmicDawn #21cm #Fractals #FCE #Astrophysics

zenodo.org/records/1710...

Ashlee Nichols Brookens | Substack Filmmaker, editor, and writer. Co-Executive Producer of NASA’s Cosmic Dawn. Sharing thoughts on creativity, and hopefully shortcuts that save you time

Ashlee’s new Substack. #CosmicDawn #NASA #Filmediting

substack.com/@signalvex?r...

Dust‑Shrouded Supermassive Black Holes Detected at Cosmic Dawn

Seven quasars shrouded in dust from when the universe was under a billion years were discovered with the Subaru Telescope and JWST; the dust blocks about 99.9% of ultraviolet light. Read more: getnews.me/dust-shrouded-supermassi... #cosmicdawn #blackholes

The JWST's New Contribution To Understanding The Cosmic Dawn: MINERVA The JWST is performing a new multi-wavelength survey called MINERVA (Medium-band Imaging with NIRCam to Explore ReVolutionary Astrophysics). It'll study four extragalactic fields in greater detail and...

The JWST's New Contribution To Understanding The Cosmic Dawn: MINERVA #Science #Space #Astrophysics #JWST #CosmicDawn

A sharper image of the early universe: Program brings greater understanding to star and galaxy formation What was the universe like in the first few hundreds of millions of years after it came into existence? How did the first stars and galaxies form? Those are questions that astronomers now have a better chance of answering, thanks to a new research program using the James Webb Space Telescope (JWST), which came online in 2022.

✨Unlocking the universe's baby pictures!🌌 JWST peers back billions of years, revealing how the 1st stars & galaxies ignited.🤯 #CosmicDawn

Source: phys.org/news/2025-09-sharper-ima...

NASA Documentary on the James Webb Telescope

great break from all the politics...

Cosmic Dawn - 90 minutes

www.youtube.com/watch?v=uSMG...

Tons of great NASA videos over on the You of Tube.

#NASA
#JamesWebbTelescope
#CosmicDawn
#Astronomy
#Space
#Science

Le Chiffre de GEO: âgé de 13 milliards d'années, le plus ancien trou noir jamais observé révélé par James Webb Le télescope James Webb a repéré un trou noir vieux de 13 milliards d’années, niché au cœur d’une petite galaxie lointaine. Cette découverte inattendue soulève de nombreuses questions sur notre connaissance des premiers temps de l'Univers.

Un trou noir vieux de ~13 G-ans détecté par JWST : CAPERS-LRD-z9 nous renvoie à 500 M ans après le Big Bang : révolution cosmique ? www.geo.fr/sciences/le-... #Space #Science #Innovation #Astrophysics #EarlyUniverse #CAPERSLRDz9 #CosmicDawn