Science ❯ Astronomy ❯ Cosmology

Dark Energy

Universe Expansion Big Crunch Cosmic Expansion Black Holes Dark Energy Spectroscopic Instrument Supernovae Dark Energy Survey DESI Dark Matter Research Findings

CHIME Detects Faint 21 cm Hydrogen Glow at z ≈1 Using Only Its Own Data

The autonomous measurement opens a lower-cost route to trace cosmic expansion with hydrogen maps.

NASA's Roman Telescope Poised for Falcon Heavy Launch

Astronomers Publish Largest Two‑Dimensional Sky Map with 5.6 Trillion Pixels

Two Peer‑Reviewed Analyses Reach Opposite Conclusions on Cosmic Acceleration

Study Reaffirms Cosmic Acceleration After Rebutting 2025 Deceleration Claim

Mathematicians Show Friedmann Model Is Unstable at the Big Bang

New Cosmology Tests Hint the Universe May Not Be Uniform on the Largest Scales

Unreviewed Study Foresees Big Crunch in 19.5 Billion Years

Preprint Forecasts Big Crunch for the Universe Around 33.3 Billion Years After the Big Bang

DECam Image Reveals Sombrero Galaxy’s Giant Halo and Stellar Stream

DESI Finishes 5-Year Survey With Record 3D Map of 47 Million Galaxies

DESI Completes Five-Year Survey With Record 3D Map of the Universe

Most Precise Local Hubble Measurement Sets H0 at 73.5 km/s/Mpc

Global Collaboration Pins Local Hubble Constant at 73.50 ± 0.81 km/s/Mpc With 1% Precision

Webb Delivers Sharpest Dark-Matter Map, Revealing the Universe’s Hidden Scaffold

DES Year 6 Delivers Precise 3×2pt Cosmology With Mild CMB Discrepancy

South Korean Study Claims Cosmic Expansion Is Slowing, Challenging Dark Energy Orthodoxy

NASA Details Roman Telescope’s Milky Way Map and Dark Energy Void Surveys as Launch Prep Advances

Gravitational-Lens Time Delays Deliver New Hubble Constant, Deepening the Tension

New Study Claims the Universe Is Now Decelerating After Supernova Age-Bias Correction