A supernova from 10 billion years ago solved the mystery of the universe's expansion rate
Sandeep K S
Dec 11, 2025
1 min read
Discovering the ancient supernova SN 2025wny, 10 billion light-years away, sheds light on dark energy. This cosmic explosion is exceptionally bright, with gravitational lensing by an intervening galaxy bending its light and creating multiple images. The varied light paths reveal crucial data, helping solve the Hubble tension by recalculating the universe's expansion rate.
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In space, fire doesn't rise. It forms a ghostly sphere that is harder to detect and harder to kill. New research aims to tame flames for the journey to Mars.
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