Einstein Zig-Zag Lens Discovery Offers New Insights into Cosmic Expansion

Researchers using the James Webb Space Telescope have discovered the first example of an "Einstein zig-zag," a phenomenon where light from a distant quasar is bent through two regions of warped space-time, creating six mirror images. This discovery could help address the "Hubble tension" in cosmology by allowing precise measurements of the Hubble constant and dark energy, potentially resolving discrepancies in our understanding of cosmic expansion.