When JWST looked at XLSSC 122, a galaxy cluster 10.4 billion light-years away, it caught gravity bending light from galaxies about 12 billion years in the past, and a dark matter core packed too tightly for cosmic noon
The James Webb Space Telescope has identified a dense, mature galaxy cluster located 10.4 billion light-years away, challenging existing cosmic noon models.
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The brief
The James Webb Space Telescope (JWST) has observed XLSSC 122, a galaxy cluster situated 10.4 billion light-years from Earth. Using gravitational lensing, the telescope captured light from galaxies dating back 12 billion years.
Data reveals a dark matter core with a density exceeding expectations for the cosmic noon period. These reports emphasize the significance of finding a mature, well-developed structure at such a distance.
Future updates will focus on how this cluster's dark matter distribution affects current scientific understanding of the early universe. Coverage does not yet specify the long-term impact on cosmic evolution models.
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Quick answers
What is the primary discovery regarding XLSSC 122?
JWST identified it as a mature galaxy cluster featuring a highly dense dark matter core and a supermassive black hole.
How did the telescope observe the distant galaxies?
The observation utilized gravitational lensing, where the cluster's gravity bends light from more distant, 12-billion-year-old galaxies.
Why is this finding notable?
The cluster is described as abnormally well-developed for its age, providing new data on the cosmic noon frontier.
Coverage (5)
- New JWST images of abnormally well-developed galaxy cluster open up the 'cosmic noon' frontier Phys.org · 2d ago
- James Webb Space Telescope finds most distant galaxy cluster with gravitational lensing eciks.org · 2d ago
- Webb spots the birth of a giant galaxy and a supermassive black hole Phys.org · 2d ago
- Another Early Universe Surprise from the JWST: A Mature Galaxy Cluster Universe Today · 2d ago
- When JWST looked at XLSSC 122, a galaxy cluster 10.4 billion light-years away, it caught gravity bending light from galaxies about 12 billion years in the past, and a dark matter core packed too tightly for cosmic noon Space Daily · 2d ago
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