Stars and Atoms. A neutron star is less than 3.2 solar masses. 3.2 solar masses Asimov, Isaac. Guide to Earth and Space . Such a neutron star was less than 3.2 solar masses.
Stars are objects that shine because they give off energy by process of nuclear fusion.
However, there are several groups of stars that don't undergo the fusion process. Among these are the neutron stars. The formation of neutron stars is a long process. A star more massive than the sun, must first collapse. This occurs because of an extreme downward pull of gravity.