Astronomers Spot Ultra-Faint Galaxy from the Universe’s Dawn

LAP1-B, observed 800 million years after the Big Bang, reveals clues about the first stars and dark matter

James Webb Space Telescope LAP1-B Gravitational Lensing

En resumen

Using the James Webb Space Telescope, astronomers discovered LAP1-B, an ultra-faint galaxy from 13 billion light-years away, magnified by gravitational lensing.
Its primitive chemical composition and low heavy element levels suggest it may be the closest observed galaxy to the Universe’s first, pristine galaxies, with indications of Population III star supernovae and a massive dark matter halo.

Resumen generado por IA

Tamaño de fuente

Using the James Webb Space Telescope, astronomers discovered LAP1-B, an ultra-faint galaxy from 13 billion light-years away, magnified by gravitational lensing. Its primitive chemical composition and low heavy element levels suggest it may be the closest observed galaxy to the Universe’s first, pristine galaxies, with indications of Population III star supernovae and a massive dark matter halo.

Read the full article on Ars Technica

Temas relacionados

James Webb Space Telescope

TemasLAP1-B Gravitational Lensing Population III Stars Dark Matter

This article was originally published by Ars Technica.

Noticias relacionadas

Más sobre este temaJames Webb Space Telescope

Ciencia·hace 21 horas

Gene Editing Safety Breakthrough: AI-Optimized Cas9 Reduces Off-Target Effects

Researchers modified AlphaFold AI to identify and alter key areas of the Cas9 protein in gene-editing systems, significantly reducing off-target effects from 28% to 5% through targeted amino acid swaps.

Ars Technica

5 min de lectura

Ciencia·hace 3 días

Orcas Documented Ramming Sunfish into "Bite-Size Pieces" Off Cabo San Lucas

Scientists documented orcas off Cabo San Lucas using a "stabilize-and-ram" technique to break sunfish into fragments, possibly for easier feeding for younger orcas or for play. This specialized behavior, also observed in Baja California, is being studied to understand its purpose.

NPR News

3 min de lectura

Ciencia·hace 3 días

Science News Roundup: Ancient Avocados, Warrior Princesses, and Global Birdsong Patterns

NPR's Short Wave presents three science stories: ancient avocados revealing genetic diversity crucial for future sustainability, mummified Egyptian princesses found to be physically strong and active, challenging assumptions, and a global study on birdsong identifying universal communication patterns.

NPR News

5 min de lectura

Ciencia·hace 4 días

Orcas Filmed Ramming Sunfish to Fragments in Cooperative Hunting

Orcas in Mexico's Gulf of California have been filmed using a new "ram-to-fragment" hunting technique, where they team up to ram sunfish carcasses with such force that they explode into small pieces. This behavior, documented in a new paper, may aid juvenile feeding or be a form of play.

Ars Technica

3 min de lectura

Ciencia·hace 4 días

Chinese Woman Wins Fields Medal for First Time, Two Chinese Mathematicians Honored

Hong Wang becomes the first Chinese woman to win the Fields Medal, one of two Chinese mathematicians honored this year alongside Yu Deng, John Pardon, and Jacob Tsimerman. The awards, presented in Philadelphia, sparked joy in China but also raised questions about brain drain.

NPR World

4 min de lectura

Ciencia·hace 4 días

Orcas Filmed Ramming Sunfish to Fragments in Gulf of California

Scientists have documented a novel 'ram-to-fragment' hunting technique used by orcas in the Gulf of California, where they cooperatively ram sunfish with extreme force. This behavior, observed in 2024 and 2025, may help younger orcas feed or serve as a form of play.

Ars Technica

4 min de lectura

Más sobre este temaJames Webb Space Telescope