Neutron star

A neutron star is a type of star that is very small and very dense. It is so dense that a teaspoon of material from a neutron star would weigh as much as a mountain. A neutron star is made up of tightly packed neutrons, which are tiny particles that make up the nucleus of an atom. Neutron stars are created when a very large star dies and its core collapses inwards. It is so strong that nothing, not even light, can escape from it.