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Big Bang

Early Universe Cosmic Dawn Galaxies Universe Formation Cosmic Microwave Background Cosmic Noon Galactic Evolution Cosmic Evolution Galaxy Formation Baryon Acoustic Oscillations Galaxy Maturity Water Formation Cosmic Voids Formation of the Universe Cosmic Explosions Dark Matter Population III Stars Epoch of Reionization Expansion Phases Cosmic Timeline Galaxy Evolution Origin of the Universe

JWST Finds Compact Five-Galaxy Merger From 800 Million Years After the Big Bang

A Nature Astronomy study ties an oxygen‑rich halo to merger dynamics, challenging prevailing models of early galaxy growth.

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

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

New Model Puts Odds of Spotting an Exploding Primordial Black Hole This Decade at Up to 90%

JWST Study Points to Earendel Being a Compact Star Cluster

Gaia DR3 Maps 35,000 Variable Stars Across 1,200 Milky Way Open Clusters

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

Supersonic Turbulence Shaped the First Stars, Simulations Show

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

Webb Reveals Binary Interaction in Planetary Nebula NGC 6072 and Detects 2,500 Early Galaxies

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

New BAO Analysis Strengthens Local Void Solution to Hubble Tension

Researchers Poised to Decode Cosmic Dawn’s 21-Centimeter Signal

Webb’s COSMOS-Web Survey Yields Deepest Map With Nearly 800,000 Galaxies