New gravitational lensing measurements by the TDCOSMO Collaboration support the Hubble Tension, confirming differences between Early and Late Universe Hubble Constant values using updated ...

The James Webb Space Telescope captured massive galaxy cluster RX J2129. located about 3.2 billion light-years away. A ...

The best JWST images reveal galaxies, nebulae, and cosmic structures in stunning infrared clarity. These James Webb photos ...

Since then, astronomers have observed all manner of lensing caused by all manner of bodies—perhaps none as visually striking ...

Mahler) Named "Galactic Monocle," the above photograph is from the NASA/ESA/CSA James Webb Space Telescope. This photograph ...

Thirty years ago, astronomers weren’t sure planets beyond our solar system even existed. This year, NASA has confirmed its ...

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their results match “local” measurements but clash with early-universe estimates, ...

A surprisingly mature spiral galaxy named Alaknanda has been spotted just 1.5 billion years after the Big Bang—far earlier than astronomers believed such well-structured galaxies could form. With ...

An alien comet, a Martian volcano, a man’s fall from the sun and a groundbreaking telescope’s first images: Here are the most jaw-dropping space photos of 2025.

JWST spots a mature early-universe spiral as CERN reveals how light nuclei form in extreme collisions, challenging core ...

The University of Innsbruck is coordinating a new FWF special research area on the dark universe, which seeks answers to the biggest questions in modern cosmology.

NASA's Nancy Grace Roman Space Telescope is now fully assembled and ready to begin launch preparations this summer.