A 500-Billion-Year Spin: The Tiny Cosmic Twist That Could Rewrite the Universe

A faint cosmic spin – one rotation per 500 billion years – could resolve the stubborn Hubble tension by tweaking standard expansion models. Researchers led by István Szapudi showed this tiny rotation harmonizes supernova and cosmic microwave background measurements without defying known physics. The next challenge is building detailed simulations and hunting for subtle signatures [...]