What is smaller than quarks – I'm a Scientist 2024/25

Question: What is smaller than quarks
- Keywords:
  particles,
  quarks,
  universe
Asked by case520pose on 28 Apr 2025.
- Martin McCoustra answered on 28 Apr 2025:
  
  As far as I’m aware, quarks are the smallest things making up hadrons like proton and neutron. I’m not sure if they are smaller than electrons and I don’t think there are any building blocks of electrons.

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