Question

How does the evolution of a high mass star differ from that of a mid-size star (like the Sun)? What are the end products of each type of star and what prevents those objects from collapsing further?

Answer 1

Answer-The life cycle of star depends upon the on the mass of star,larger the mass of star shorter is its life cycle.The star mass is determined by the amount of mass it contained in its Nebula.Nebula is the giant cloud of gases and dust from from which star is formed.As the time passes the Hydrogen gas contained in the Nebula is pulled together by gravity and starts to spin by gravity.When gas starts to spin with faster rate the star gets heated up and become protostar.The temperature eventually increses upto 15000000 degree and nuclear fusion starts to happen inside the Nebula core.Due to fusion reaction the star starts to glow brightly, and become stable.This stable state of star remains for millions of years.In this way it differ from mid -size star like sun, as it depends upon size of star.

The end of products of the core of star consists of carbon and oxygen.

The life cycle of star depends on the force of gravity.Gravity constantly works to cause the star to collapse.The star core is very hot due to He gas fuses ,due to very hot temp and there is pressure within the gas or Nebula. This high pressure counteracts the force of gravity and making the star at the equilibrium condition called as Hydrostatatic equilibrium and prevents star from collapsing from each other further.