Science ❯ Astronomy ❯ Cosmology ❯ Galaxies

Milky Way

Interstellar Comet 3I/ATLAS Makes Closest Pass to Earth at About 168 Million Miles

Scientists describe the rare interstellar visitor as a natural, volatile‑driven comet posing no risk.

Astronomer Reports 20 GeV Gamma-Ray Halo Consistent With Dark Matter in Fermi Data

Webb Maps Four Dust Spirals and Confirms Third Star in Rare Apep Wolf-Rayet System

New Simulations Revive Dark-Matter Explanation for Milky Way’s Gamma-Ray Glow

Webb Reveals 8-Light-Year Protostellar Jet, Bolstering Massive-Star Formation Theory

Astronomers Identify Ultra-Stripped Supernova, Propose New ‘Type Ien’

ALMA Reveals 1.4-Light-Year Bubble Around Supergiant DFK 52

Record-Breaking 225-Solar-Mass Black Hole Merger Challenges Formation Models

Interstellar Comet 3I/ATLAS Unveils Glowing Coma and Tail

Study Finds 2% Chance of Milky Way–Andromeda Collision in 5 Billion Years

Mysterious 44-Minute Radio Transient Reveals Unprecedented X-ray Pulses