JWST Detects Oldest Supernova Ever Observed

Recently, astronomers using the James Webb Space Telescope detected the light from the oldest and most distant supernova ever observed, dating back nearly 13 billion years to just about 730 million years after the Big Bang.

  • The supernova was linked to a powerful gamma-ray burst, GRB 250314A, signalling the collapse of a massive star and the likely formation of a stellar-mass black hole.
  • Due to cosmic expansion and time dilation, the supernova’s peak brightness appeared delayed, reaching its maximum roughly three-and-a-half months after the gamma-ray burst from Earth’s perspective.
  • JWST also detected the supernova’s host galaxy, revealing that its environment appears similar ....
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