Cosmology

Universe Dark Matter Early Universe Galaxies Big Bang Big Bang Theory Universe Structure Universe Evolution Cosmic Events Universe Expansion

JWST Spots CO2‑Heavy Coma on Interstellar Comet 3I/ATLAS

A new preprint reports an unusually high CO2-to-water ratio, prompting follow-up checks by other teams.

Reanalysis Sharpens 1977 'Wow!' Signal: Stronger, Higher-Frequency, Tighter Origin

Bennu Samples Tie Asteroid Color Differences to Surface Exposure Age

Study Pins Jupiter’s Birth to 1.8 Million Years After the Solar System Began

CHIME Outriggers Pinpoint Brightest Nearby Fast Radio Burst to Galaxy NGC 4141

ALMA Maps 1.4‑Light‑Year, Sun‑Mass Bubble Around Red Supergiant DFK 52

Nature Study Captures First Direct Look Inside an Exploding Star

New Modeling Strengthens Direct-Collapse Black Hole Explanation for JWST’s ‘Little Red Dots’

Black Hole-Star Encounter Likely Sparked Rare Double-Peaked Supernova

Astronomers Reveal Universe’s Earliest Supermassive Black Hole and Record 36-Billion-Solar-Mass Titan

Deepest Optical Image of Abell 3667 Confirms Stellar Bridge from Subcluster Merger

Internal Pair Production Offers New Path to Dark Matter Detection

Axion–Dark Energy Model Predicts Big Crunch in 33.3 Billion Years

CERN Sustains First Ever Antiproton Qubit Coherence for 50 Seconds

Astronomers Spot Emerging Supermassive Black Hole in Colliding Infinity Galaxy

First Direct Images Reveal Betelgeuse’s Close-Orbiting Companion

LHCb Detects First CP Violation in Baryon Decays

LHCb Detects Charge-Parity Violation in Baryon Decays for First Time

Webb Reveals Young Stars Sculpting Cat’s Paw Nebula on Third Anniversary

Durham Team Predicts Up to 100 Hidden Milky Way Satellite Galaxies