FORBES Dark matter search: Xenon unstable


  • In a spectacular discovery, the XENON collaboration publicly announced the discovery
  • that xenon-124, an isotope of the element Xenon, is fundamentally unstable.
  • Its half-life is 1.8 × 1022 years: more than 1 trillion times the present age of the Universe.
  • It’s the longest half-life humanity has ever measured directly, and its implications for the nature of reality couldn’t be more profound.
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