[trevorjohnson32 (OP)]

Any opinions? Mine is that neutron stars  which nearly resemble black holes spin at near light speed, there couldn't be any more room for space-time to exist between the quark arrangement as that would imply more space could be taken out and that space time could allow for speeds greater then that of light which is impossible.

[Kryptid]

Quarks are more fundamental than protons or neutrons, but "size" isn't well-defined for subatomic particles. They have associated wavelengths, but you can't think of them as tiny, solid spheres with a hard radius.

[trevorjohnson32 (OP)]

Quarks are more fundamental than protons or neutrons, but "size" isn't well-defined for subatomic particles. They have associated wavelengths, but you can't think of them as tiny, solid spheres with a hard radius.

Would three quarks in a proton occupy all the space inside the proton?

[evan_au]

In the macroscopic universe, we usually think of physically larger things having more mass - and generally being more durable.

But in the quantum world, the highest energy particles have the shortest wavelength, and often the shortest lifetime.

If you are looking for "small" particles, neutrinos have a very small area in terms of their probability of interacting with other particles.