Science ❯ Astrophysics ❯ Cosmology

Universe Structure

Black Hole Formation Hidden Black Holes Planetary Systems Galaxies Black Holes Magnetic Fields Galactic Formation Extreme Gravity Black Hole Research Distant Galaxies Galactic Dynamics

Short Gamma-Ray Burst Linked to Tidal Debris of Colliding Galaxies, Likely from Neutron-Star Merger

An ApJL analysis places GRB 230906A in a faint tidal-stream galaxy about 8.5 billion light-years away.

New Framework Turns Black-Hole Shadows Into Tests of Gravity

Twin Black-Hole Mergers Display Extreme Spins, Strengthen Einstein’s Theory, and Point to Second-Generation Origins

Wormhole Hypothesis Revives 2019 Wave Mystery as New Data Bolster Black‑Hole Physics

ALMA Finds Giant Gas Streamers Feeding a Massive Young Star

Stacked Spectra Through Galaxy Clusters Unveil Step-Like Signal Suggesting Axion Conversion

New Gravity-Only Models Propose Mirror Sector and Cosmic Horizon Origins for Dark Matter