Science ❯ Astronomy ❯ Galaxies ❯ Galaxy Formation

Ancient Galaxies

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

The paired discoveries are pushing researchers to rethink gamma‑ray burst progenitor models.

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