Tag

Galaxyformation

All articles tagged with #galaxyformation

space27 days ago•55 min saved

JWST Spots MoM-z14, the Universe’s Oldest Galaxy Yet (280 Million Years After the Big Bang)

NASA’s James Webb Space Telescope confirmed MoM-z14 as the most distant spectroscopically confirmed galaxy to date, seen as it emitted light about 280 million years after the Big Bang (redshift z=14.44). The galaxy is compact (roughly 240 light-years across) with a mass similar to the Small Magellanic Cloud, and shows rapid star formation and nitrogen-rich composition, suggesting early, globular-cluster–like stellar activity. The finding, first reported in a 2025 preprint and later peer‑reviewed in early 2026, challenges existing models of early galaxy formation and signals more discoveries to come, including with the Nancy Grace Roman Space Telescope.

via Live Science|

#earlyuniverse #galaxyformation #highredshift

science-and-technology2 years ago•2 min saved

"Early Cosmic Structures Resembled Bananas, Research Indicates"

A new study analyzing images from the James Webb Space Telescope has revealed that galaxies in the early universe were elongated and shaped more like bananas, rather than the orbs and spidery discs we see today. This unexpected finding, which deviates from previous assumptions based on Hubble telescope observations, could significantly impact our understanding of galaxy formation and the role of dark matter. The research, led by Viraj Pandya of Columbia University, suggests a revision of the gravitational frameworks that describe how galaxies are born and evolve, and it may provide new insights into the enigmatic nature of dark matter.

via The New York Times|

##astronomy #darkmatter

science-and-technology2 years ago•1 min saved

"Seismic Ripples Uncovered in Ancient Spiral Galaxies Illuminate Early Universe"

Scientists using the ALMA telescope have discovered seismic ripples in BRI 1335-0417, the oldest and farthest known spiral galaxy, formed over 12 billion years ago. This finding provides new insights into early galaxy formation and could help understand the development of galaxies like the Milky Way. The study of gas movement within the galaxy has revealed crucial information about star formation processes in the early universe.

via The News International|

##almatelescope #astronomy

science-and-technology2 years ago•2 min saved

"Spiral Galaxies Abounded in the Youthful Cosmos"

A new study using data from the James Webb Space Telescope challenges the traditional view of galaxy formation by revealing a higher-than-expected number of spiral galaxies in the early Universe. The findings suggest that spiral galaxies formed much earlier than previously thought, with about a fifth of galaxies at redshift z = 3 (less than two billion years after the Big Bang) being spirals. This indicates that other factors besides galactic collisions and mergers may play a significant role in the formation of spiral galaxies. Further research with JWST data may uncover how these early galaxies evolved and the reasons behind the longstanding presence of spiral galaxies.

via Universe Today|

##astronomy #earlyuniverse