Why does a neutron star have so much gravity?

A neutron star is created when a star is around eight to ten times Earth's sun burns out. The outward pressure generated by fusion reduces rapidly, allowing gravity to pull the star in on itself and start up a supernova, where the outer layers of a star’s atmosphere get blown into space.

Neutron stars actually deploys a lot of gravity for objects as small as they are, which is 10 kilometers in radius. Standing on a neutron star's surface would feel about 200 billion times more gravity than here on Earth. The gravity, at a large distance, only relies on the mass. A neutron star would have a little less than the star it came from. However, the neutron star is much more compact than the parent star. Ergo, the surface is in much closer to the mass. That's why the gravitational field at the surface is much bigger for the neutron star.

The neutron star has high gravity because it has a gravitational field that will make sure that the objects that are within its area will gravitate towards the star. It is evident that the magnetic fields available are stronger as compared to the magnetic fields that are found on earth. The things that are not being magnified here will be magnified by a neutron star easily.

There are some stars that end up becoming neutron stars. This is just one of the possible ends that may occur when the star is starting to lose its energy source. There are some stars that may become white dwarfs because they lack the weight and size to become neutron stars.