Answer the following.
(a) What happens in the core of a main-sequence star to cause it to move off the main sequence?
(b) Outline what will happen to a main-sequence star with a mass similar to that of the Sun after it has moved off the main sequence until it becomes no longer visible.
(c) Explain what prevents the gravitational collapse of a white dwarf star into a neutron star.
(a) What happens in the core of a main-sequence star to cause it to move off the main sequence?
(b) Outline what will happen to a main-sequence star with a mass similar to that of the Sun after it has moved off the main sequence until it becomes no longer visible.
(c) Explain what prevents the gravitational collapse of a white dwarf star into a neutron star.