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1 July 20265 min read
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A NASA Webb press release described observations pushing the boundaries of the observable universe closer to the Big Bang.
Deep infrared observations allow Webb to detect galaxies whose light has travelled for most of cosmic history.
Each such result tests models of early galaxy formation, cosmic reionization and how quickly structure emerged after the Big Bang.
Why It Matters
Webb deep-field work keeps revising the timeline of early galaxy formation.
What to Watch
Watch peer-reviewed distance estimates, spectroscopy and comparison with galaxy-formation simulations.
Primary Sources
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Topics
WebbEarly UniverseCosmologyAstronomy