No. of Recommendations: 2
Here is an interesting article that suggests we have more to learn about what holds atomic nuclei together
https://www.wired.com/story/a-new-experiment-casts...A New Experiment Casts Doubt on the Leading Theory of the NucleusBy measuring inflated helium nuclei, physicists have challenged our best understanding of the force that binds protons and neutrons.
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Here is a related article that gives some fascinating insights into what goes on in the interior of Neutron stars...
https://www.quantamagazine.org/squishy-or-solid-a-...Squishy or Solid? A Neutron Star's Insides Open to DebateThe core of a neutron star is such an extreme environment that physicists can't agree on what happens inside. But a new space-based experiment ' and a few more colliding neutron stars ' should reveal whether neutrons themselves break down.
... more at link