Summary:

- The James Webb Space Telescope has detected an unusual "zig-zag" pattern in the light from a distant galaxy, which could help resolve a major crisis in cosmology.
- This zig-zag pattern is a signature of gravitational lensing, where the gravity of a massive object bends and distorts the light from a more distant object.
- Understanding this gravitational lensing effect could help resolve the Hubble tension, a discrepancy between the rate of the universe's expansion as measured by the Hubble Space Telescope and other methods, which has challenged our current cosmological models.