/u/the_humeister's posts
Why is stable matter only composed of protons, neutrons, and electrons? Why aren't there other stable combinations of elementary particles?
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Does the fact that neutron stars are held together by gravity rather than the strong nuclear force change the stability of the neutrons in them? Or do they still have a 15 minute half-life?
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How do we know we're not made of antimatter? Or did we just arbitrarily choose what we're not made up of as "antimatter"?
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