🌌 JWST Completes a Huge Survey of the Earliest Galaxies

Source: ESA



The James Webb Space Telescope (JWST), operating since 2022 from a position 1.5 million kilometers from Earth, continues to push the boundaries of cosmic discovery. Its infrared capabilities are helping astronomers unveil the origin and evolution of galaxies across cosmic time. With unmatched sensitivity, JWST is mapping the structure of galaxies, star formation, and the influence of black holes.

Now, an international team of astronomers has cataloged 1,700 galaxy groups in the COSMOS-Web region, a 0.6-square-degree patch of sky. These observations, spanning from 1 to 12 billion years after the Big Bang, are a major leap forward in our understanding of cosmic structure. The results will be published in Astronomy and Astrophysics.

“We're able to actually observe some of the first galaxies formed in the universe,”
— Ghassem Gozaliasl, Aalto University

Galaxies are not scattered randomly; they form a "cosmic web" of clusters and filaments shaped by dark matter and gravity. Most, like our own Milky Way, belong to groups with a few to thousands of members. Understanding these structures helps trace the forces that shaped the modern universe.

IDCS J1426 Galaxy Cluster
Galaxy cluster IDCS J1426, 10 billion light-years away, has nearly 500 trillion solar masses (Credit: ESA/Hubble).

The survey reveals major transformations: early galaxies appear chaotic and rich in star formation. Over time, they evolve into structured ellipticals and spirals, with many having ceased ("quenched") star formation.

With data covering 11 billion years, astronomers can now study how environment, dark matter, and supermassive black holes have driven galactic change. The findings are expected to reshape theories of cosmic evolution.


Open Your Mind!!!

🌌 El JWST Completa un Enorme Censo de las Galaxias Más Antiguas



Desde su puesta en funcionamiento en 2022, el Telescopio Espacial James Webb (JWST) orbita a 1.5 millones de kilómetros de la Tierra, explorando el universo primitivo en luz infrarroja. Gracias a su sensibilidad sin precedentes, permite a los astrónomos observar cómo nacen y evolucionan las galaxias, así como estudiar la formación estelar y los agujeros negros supermasivos.

Un equipo internacional ha catalogado 1,700 grupos de galaxias en la región COSMOS-Web, un fragmento del cielo de 0.6 grados cuadrados. Estas observaciones cubren un periodo que va desde mil millones hasta doce mil millones de años después del Big Bang. Los hallazgos serán publicados en Astronomy and Astrophysics.

“Estamos viendo algunas de las primeras galaxias que se formaron en el universo,”
— Ghassem Gozaliasl, Universidad de Aalto

Las galaxias no están distribuidas al azar; forman una "red cósmica" de cúmulos y filamentos, moldeados por la materia oscura y la gravedad. La mayoría, como la Vía Láctea, pertenece a grupos que van desde unas pocas hasta miles de galaxias. Estudiar estas estructuras revela las fuerzas que han dado forma al universo moderno.


El censo muestra transformaciones radicales: las galaxias del universo temprano eran irregulares y muy activas en formación estelar. Las más cercanas a nuestra era son más estructuradas, con formación estelar detenida y morfologías elípticas o espirales.

Con datos que cubren 11 mil millones de años, los astrónomos pueden explorar cómo el entorno, la materia oscura y los agujeros negros han influido en la evolución galáctica. Estos descubrimientos redefinirán muchas teorías sobre el origen y desarrollo del cosmos.


Open Your Mind!!!

Comments

Post a Comment

Trending 🔥

Google’s Veo 3 AI Video Tool Is Redefining Reality — And The World Isn’t Ready

Image
Google’s Veo 3 AI Video Tool Is Redefining Reality — And The World Isn’t Ready In May 2025, Google unveiled Veo 3, its latest AI-powered video generation model, at the Google I/O event. This groundbreaking tool has rapidly transformed the landscape of digital content creation, enabling users to produce hyper-realistic videos complete with synchronized audio, dialogue, and sound effects—all from simple text or image prompts. As Veo 3 garners attention for its impressive capabilities, it also raises significant questions about the future of media authenticity, creative professions, and the ethical implications of AI-generated content. What Sets Veo 3 Apart? Veo 3 represents a significant leap forward in AI video generation technology. Unlike its predecessors and competitors, Veo 3 offers: Native Audio Integration: Veo 3 can generate synchronized audio, including dialogues, ambient sounds, and music, enhancing the realism of the videos.  High-Quality Visuals: The model produces vi...
Read more

Tiny Machines, Huge Impact: Molecular Jackhammers Wipe Out Cancer Cells

Image
  Tiny Machines, Huge Impact: Molecular Jackhammers Wipe Out Cancer Cells 1. A Revolutionary Cancer-Killing Tool Scientists from Rice University, Texas A&M, and the University of Texas MD Anderson have invented a radical tool that destroys 99% of cancer cells —without using drugs, radiation, or heat. Instead, it uses special dye molecules and gently applied light to physically rip cancer cells apart from the inside. This technique—nicknamed “molecular jackhammers” —has achieved astonishing results in lab cultures and animal studies. These molecular jackhammers are based on a familiar dye used in hospitals: aminocyanine . When exposed to near-infrared light , this dye vibrates at incredibly high frequencies—up to 1 trillion times per second. These vibrations break open cancer cell membranes, causing cells to collapse. Published in the journal Nature Chemistry , this discovery offers a new frontier in cancer treatment by physically destroying tumor cells rather than pois...
Read more

A New Kind of Life: Scientists Push the Boundaries of Genetics

Image
A New Kind of Life: Scientists Push the Boundaries of Genetics The strange idea of making life “better” It almost sounds like science fiction: a team of researchers in Cambridge claims they’ve created a form of life that’s leaner, more efficient, maybe even “more perfect” than anything nature has ever managed. That phrase more perfect is tricky, of course, because perfection in biology is a moving target. What works in one environment is useless in another. Still, the claim is bold. The scientists didn’t just tweak a gene here or there, like swapping out corn DNA to make it more pestresistant. They rewrote the actual structure of life’s code, stripping it down, removing what they saw as excess baggage. The result is something they call Syn57 : a genetically engineered strain of E. coli. Yes, the same bacterium you’ve probably heard about from grim foodsafety warnings. Only this version isn’t lurking on a questionable hot dogit’s a reimagined lifeform built line by line from altere...
Read more