Rare Gravitationally Lensed Supernova Offers New Method to Measure Cosmic Expansion

Astronomers have identified an exceptionally rare superluminous supernova, observed five times due to gravitational lensing. This unique celestial event, located 10 billion light-years away, provides a novel approach for accurately determining the universe's expansion rate. Such precise measurements could help resolve one of cosmology's significant mysteries regarding the true speed of cosmic expansion.