NASA’s Webb Opens New Window on Supernova Science

https://science.nasa.gov/missions/webb/nasas-webb-opens-new-window-on-supernova-science/ Peering deeply into the cosmos, NASA’s James Webb Space Telescope is giving scientists their first detailed glimpse of supernovae from a time when our universe was just a small fraction of its current age. A team using Webb data has identified 10 times more supernovae in the early universe than were previously known. A few of the newfound exploding stars are the most distant examples of their type, including those used to measure the universe's expansion rate.