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Health & Science4h 12m ago

A fresh analysis of Type Ia supernovae by a team including University of Southampton researchers overturns a controversial 2025 claim that cosmic expansion is slowing, reaffirming the Universe's accelerating expansion.

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Southampton, UK; Yonsei, South Korea

Who
Dr. Phil Wiseman, Professor Mark Sullivan, Dr. Brodie Popovic (University of Southampton), Professor Adam Riess, Professor Young-Wook Lee (Yonsei University)
What
A fresh analysis of Type Ia supernovae by a team including University of Southampton researchers overturns a controversial 2025 claim that cosmic expansion is slowing, reaffirming the Universe's accelerating expansion.
When
Wed, 17 Jun 2026 16:05:01 GMT · 4h 12m ago
Where
Southampton, UK; Yonsei, South Korea ·
Why
The new study disproved the 2025 claims by showing errors in how the age of stars was estimated and a failure to account for the mass of host galaxies in the original analysis.
The Frontline Impact

How this affects you

This study prevents dismantling nearly three decades of astronomical progress by confirming earlier measurements of cosmic acceleration were correct, allowing scientists to continue focusing on understanding dark energy rather than questioning its existence. It reinforces the scientific method where extraordinary claims require careful testing.

Story chain

4 events in this thread
  1. Health & Science4h 12m ago
    A fresh analysis of Type Ia supernovae by Dr. Phil Wiseman and colleagues overturns a controversial 2025 claim that cosmic expansion is slowing.
    Open article
  2. Currently Reading4h 12m ago
    A fresh analysis of Type Ia supernovae by a team including University of Southampton researchers overturns a controversial 2025 claim that cosmic expansion is slowing, reaffirming the Universe's accelerating expansion.
  3. Health & Science4h 12m ago
    A fresh analysis of Type Ia supernovae overturns a controversial 2025 claim that cosmic expansion is slowing.
    Open article
  4. Health & Science4h 12m ago
    A new study by Dr. Phil Wiseman and colleagues published in the Monthly Notices of the Royal Astronomical Society confirms the universe’s expansion is still accelerating, overturning claims by Professor Young-Wook Lee.
    Open article

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