The Most Distant Lensing Cluster Reveals a Dark Matter Surprise
Over 10 billion years in the past, an ultra-massive galaxy cluster lenses objects behind it. That has big implications for dark matter.
gravitational lensing
JWST Captures Its Most Extreme Gravitational Lens Ever
The James Webb Space Telescope (JWST) has captured its most extreme gravitational lens, revealing the galaxy cluster Abell S1063, located 4.5 billion light-years away, showcasing unprecedented features through deep field observations that highlight the effects of strong and weak gravitational lensing.