Science ❯ Astronomy ❯ Cosmology ❯ Big Bang

Early Universe

JWST Confirms MoM‑z14, Most Distant Galaxy Yet, at Redshift 14.44

An unusual mix of extreme brightness, compactness, nitrogen emission challenges standard timelines for early enrichment.

Early-Universe Quasar Defies Models With 13 Times the Eddington Limit, Bright X-Rays and a Radio Jet

JWST’s ‘Little Red Dots’ Are Young Black Holes Shrouded in Gas, Nature Study Finds

Earliest Superheated Galaxy-Cluster Atmosphere Detected Challenges Formation Models

Record-Long Gamma-Ray Burst and Earliest-Known Supernova Challenge Models of Cosmic Explosions

JWST Detects Chemical Fingerprint of Primordial 'Monster Stars' in Early Galaxy

JWST Reveals 'Alaknanda,' a Milky Way–Like Spiral 1.5 Billion Years After the Big Bang

Astronomers Report Most Metal-Poor Star Yet From the Large Magellanic Cloud

Chandra Finds Early Quasar’s Black Hole Growing Beyond the Eddington Limit

JWST Study Points to Earendel Being a Compact Star Cluster

Most Distant Fast Radio Burst Localized to Dwarf Galaxy at z=2.148

Astronomers Reveal Universe’s Earliest Supermassive Black Hole and Record 36-Billion-Solar-Mass Titan

HeH+ Ion’s Reactivity Endured at Cryogenic Temperatures, Reframing Early-Star Cooling

Webb’s 100-Hour Mid-Infrared Survey of Hubble Ultra Deep Field Reveals Ancient Galaxies

Astronomers Capture First Evidence of Quasar Radiation Halting Star Formation in Galaxy Collision