This is a Super-nova. After this the remaining core contract so rapidly that it never stop. At last it becomes only a mere point in space without any dimension called 'Singularity'. A black hole is formed. Although there are controversies about what implications resulted from the existence of black-holes, scientists believe that they exists.
Nature is much greater than human beings.
We are only a speck of dust in this universe. Sustained by atom- decomposition force. Neutron-star Dead star which comprise of pure neutron. Sustained by neutron-decomposition force. Pulsar Strong periodic source of magnetic-field.