The James Webb Space Telescope (JWST) has tracked the earliest supernova ever observed. This supernova exploded in a tiny galaxy during the universe's first billion years after the Big Bang. At that time, the universe was full of cold gas and busy making new stars rapidly. Using its near-infrared cameras, JWST detected tiny changes in brightness caused by the star’s death. Scientists studied how the light from the galaxy changed over time. This helped them separate the supernova's fading light from other stars. According to the European Space Agency, the bright drop in light matched a core collapse supernova. This happens when a huge star runs out of fuel and collapses. The explosion spread heavy metals far into space. JWST captured the shifting brightness of this material cloud. Scientists believe such giant stars were common in the early universe. Their explosions shaped young galaxies, helping form heavy elements needed for rocky planets and life. The galaxy where this supernova appeared was small, dense, and very active in star formation. Such environments created many short-lived massive stars, causing frequent energetic explosions. These events stirred gas and changed how new stars formed. This finding rewrites the timeline of the early universe. It shows star deaths powered chemical changes and galaxy growth sooner than thought. The discovery opens the door to spotting even older supernovae, giving clues to how the first stars and galaxies evolved. JWST’s breakthrough offers the clearest look yet at how the first stars died and spread materials needed for planets, organic molecules, and complex chemistry. Scientists are excited to uncover more ancient starbursts shaping the young cosmos.