JWST Unveils First 'Einstein Zig-Zag'

Astronomers using the James Webb Space Telescope have discovered the first-ever 'Einstein zig-zag' in quasar J1721+8842, showing six images via a double gravitational lens. Initially identified in 2018, JWST's NIRCam and NIRSpec revealed two additional points and a faint red Einstein ring.

This rare phenomenon could help resolve the Hubble tension and shed light on dark energy, offering a new method to measure the universe's expansion rate more accurately. Scientists are excited about the potential insights from this cosmic alignment.