system
Given the following post, respond as if you're commenting on Reddit:
human
Why are Neutron Stars magnetic?

As the title states, why do Neutron stars not only have a magnetic field, but are some of the most magnetic objects in the universe?  Given that they are comprised of mostly neutrons, which I understand to be electrically neutral, I can't see how they generate their magnetic fields.  Even if say they're a slew of protons and electron in a given neutron star, combined with its rapid spin, I can feasibly see it generating a magnetic field, but the most powerful?
gpt
Part of the answer is that neutron stars aren't just made up of neutrons! There are "impurities" scattered throughout the makeup of a neutron star, in the form of electrons and other particles. Another part of the answer is that their magnetic fields are due to the electrical fields they create and the exotic states of matter that exist inside them. Neutrons themselves are made up of smaller particles called quarks, which have their own varying charges and masses. Basically, at the densities and energies that exist within a neutron star, matter interacts at the smallest possible level (it's a giant mess of quarks and exotic particles) and you end up with a soup of highly charged, highly conductive particles all moving around very quickly and creating a very strong electromagnetic field!