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Study Claims Universe Slowed Expansion, Sparks Skepticism

11/6/2025

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Summary

Story summary

A study led by Professor Young-Wook Lee of Yonsei University suggests the universe may have slowed its expansion about 1.5 billion years ago.
The analysis suggests that slowdown could lead to a 'big crunch'.
Nobel laureate Adam Reiss and other scientists express skepticism, citing concerns about the methodology and prior refutations of similar claims.
Upcoming observations may provide further clarity on dark energy and the universe's expansion.

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Story summary

A study led by Professor Young-Wook Lee of Yonsei University suggests the universe may have slowed its expansion about 1.5 billion years ago.
The analysis suggests that slowdown could lead to a 'big crunch'.
Nobel laureate Adam Reiss and other scientists express skepticism, citing concerns about the methodology and prior refutations of similar claims.
Upcoming observations may provide further clarity on dark energy and the universe's expansion.