What happens to stars that have ejected a planetary nebula?
A)They become protostars.
B)They become brown dwarfs.
C)They become white dwarfs.
D)They become red giants.

Question

Quizplus · Accepted Answer

Stars that have ejected a planetary nebula go through a process where they gradually lose their outer layers, forming a white dwarf core. This is because the star has used up most of its fuel and is no longer able to produce enough energy to prevent gravity from causing it to collapse. The white dwarf that remains is extremely dense and hot, but no longer undergoing significant nuclear reactions.

What Happens to Stars That Have Ejected a Planetary Nebula