Summary #1358

Physicists Pin Down Nuclear Reaction From Moments After the Big Bang
  • They simulated the Big Bang in a lab, and measured the reaction rate of deuterium hit by a proton beam, revealing key details about the first minutes after the Big Bang.
  • Deuterium’s creation was the first step in Big Bang nucleosynthesis, a sequence of nuclear reactions that happened when cosmos was a soup of protons and neutrons.
  • The measurement allowed physicists to compare cosmos in the first few minutes to 380,000 years later, when it cooled down enough for electrons to orbit atomic nuclei.
  • It basically tells us that the standard model of cosmology is so far pretty correct.


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