Welcome to the 18th annual Space Telescope Advent Calendar, featuring remarkable images from NASA’s Hubble Space Telescope and James Webb Space Telescope. Every day until December 25, this page will ...
Day 13 of the 2025 Space Telescope Advent Calendar: A Sea of Galaxies. The James Webb Space Telescope pointed its Near-Infrared Camera toward the galaxy cluster MACS J1149.5+2223 and captured this ...
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