Free Astronomy Magazine September-October 2025

SEPTEMBER-OCTOBER 2025 show a greater abundance of ex- tremely faint and distant galaxies than ever before. Using Webb’s crisp near-infrared observations of this by NASA/ESA/CSA Claire Blome & Christine Pulliam Webb refines the Bullet Cluster’s mass N ASA’s James Webb Space Tele- scope recently zeroed in on the Bullet Cluster — deliver- ing highly detailed images that