Major Catastrophes on the Scales of Celestial Objects——The Formation and Fate of Stars:Part 2

It is briefly introduced in this paper how white dwarfs,neutron stars or black holes can be finally produced through collapse process of evolved stars with different masses,and what are the main physical and structural characteristics of these kinds of celestial compact objects.Besides,some serious influences of stellar catastrophes on our planet,the earth,and human being lived on it that will probably occur in future are discussed.