Subject: Atomic Nuclei & Neutron Stars
Here is an interesting article that suggests we have more to learn about what holds atomic nuclei together

https://www.wired.com/story/a-...

A New Experiment Casts Doubt on the Leading Theory of the Nucleus

By measuring inflated helium nuclei, physicists have challenged our best understanding of the force that binds protons and neutrons.

.... more at link

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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 Neutron Star's Insides Open to Debate

The 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