Scientists Say a 500-Billion-Year Spin Could Be the Key to the Universe’s Biggest Puzzle

Source: https://dailygalaxy.com/2025/04/500-billion-year-spin-universe-puzzle/
Summary
Scientists propose that the universe's accelerating expansion, currently attributed to dark energy, might be explained by an extremely slow spin. This proposed spin, completing one rotation every 500 billion years, could warp spacetime, mimicking the effects of dark energy without requiring new particles or modified gravity theories. Detecting this spin is challenging, requiring precise analysis of the Cosmic Microwave Background and distant celestial objects for subtle patterns. If proven, this hypothesis would redefine dark energy, impacting our understanding of the universe's origin and ultimate fate, and highlighting the importance of precision cosmology.