"Webb Telescope Discovers Another Lensed Supernova in Far-Flung Galaxy"

NASA's James Webb Space Telescope has detected a second lensed supernova in the distant galaxy MRG-M0138, thanks to the gravitational lensing effect of the galaxy cluster MACS J0138.0-2155. This rare event, following the first supernova named Requiem discovered in 2016, provides astronomers with a unique opportunity to study cosmic events and measure the universe's expansion rate, known as the Hubble constant. The newly discovered supernova, dubbed Supernova Encore, along with Requiem, represents the most distant pair of 'standard candle' supernovae ever found, which will help in obtaining a precise measurement of the Hubble constant when observed in infrared around 2035.