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Health & Science3h 1m ago

New observations from NASA's James Webb Space Telescope (JWST) revealed galaxy cluster XLSSC 122 as the most distant example of strong gravitational lensing, challenging cosmic evolution theories due to its unexpected mass concentration.

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Caltech, Yonsei University

Who
A team led by researchers from IPAC (Caltech), including Kyle Finner, Zachary Scofield, and Hyungjin Joo, utilizing NASA's James Webb Space Telescope (JWST), European Space Agency's XMM-Newton spacecraft, and Hubble Space Telescope.
What
New observations from NASA's James Webb Space Telescope (JWST) revealed galaxy cluster XLSSC 122 as the most distant example of strong gravitational lensing, challenging cosmic evolution theories due to its unexpected mass concentration.
When
Fri, 19 Jun 2026 18:20:01 GMT · 3h 1m ago
Where
Caltech, Yonsei University ·
Why
The cluster's highly concentrated mass at an early cosmic era does not agree with conventional cosmological model predictions.
The Frontline Impact

How this affects you

The discovery of XLSSC 122's properties challenges existing cosmological models regarding the formation and evolution of massive structures in the early universe, potentially requiring significant revisions to foundational frameworks.

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