James Webb reveals a massive cosmic structure that challenges our understanding of the Universehttps://www.sciencedaily.com/releases/2026/10/261012185021.htm
NASA’s James Webb Space Telescope has revealed an ancient galaxy cluster with an unexpectedly dense concentration of dark matter, challenging theories about how the universe developed. The discovery also uncovered a surprising connection between scattered starlight and invisible dark matter that could transform how astronomers study the early cosmos.