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

New Framework Turns Black-Hole Shadows Into Tests of Gravity

Simulations quantify the imaging thresholds future arrays must reach to reveal deviations from general relativity.

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