Science ❯ Astronomy ❯ Cosmology ❯ Big Bang

Early Universe

JWST Studies Report Strongest Evidence Yet of Population III Stars Near GN‑z11

Independent preprints present metal‑free helium‑plus‑hydrogen signals near GN‑z11 matching models for massive first stars.

Astronomers Identify Most Chemically Pristine Star Ever Observed

Astronomers Find Most Pristine Star Yet From the Large Magellanic Cloud

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

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