James Webb telescope detects 13-billion-year-old supernova with gamma-ray burst

JWST captures faint light of supernova, GRB 250314A (Image: NASA/ESA/CSA/STScI/Andrew Levan)

NASA’s James Webb Telescope has spotted history’s oldest known supernova. The explosion occurred just 700 million years after Big Bang. It was identified in connection with a bright gamma-ray burst. This discovery reveals stellar death in the universe’s earliest epoch.

Ancient Stellar Explosion Observed Clearly

The French–Chinese SVOM satellite first detected the gamma-ray burst. James Webb’s infrared instruments then captured the fading light from explosion. Scientists confirmed it originated from a massive star’s dramatic collapse. The blast likely formed a black hole inside a distant galaxy.

Teams Coordinate Global Observations

International astronomers combined data from multiple telescopes worldwide for precision. Webb’s spectrometers revealed redshift indicating extreme cosmic distance and age. Early-universe supernovae appear similar to modern stellar explosions patterns. Researchers compare chemical signatures with local supernova remnants for confirmation.

Distant Host Galaxy Identified

The explosion occurred in a faint galaxy at redshift seven. Webb’s sensitivity captured spectral fingerprints of ancient stellar material. Galactic formation remained chaotic and young during this early cosmic time. Observing these stars reveals conditions shaping primordial galaxies’ evolution.

Significance For Cosmic History

Supernovae forged elements essential for planets, stars and life. Early explosions enriched galaxies, enabling later star formation processes. This record-breaking supernova surpasses previous discoveries by billions years. James Webb shows that cosmic history is older and more complex.

Future Discoveries Expected Soon

Astronomers anticipate Webb will uncover even older stellar explosions soon. Data will improve models of star formation in early universe. Scientists aim to explore first-generation stars shaping cosmic chemistry. The telescope is rewriting understanding of universe’s formative years.