Stage 4 of Stars Formation: Planetary Nebula

What is a Planetary Nebula?


INTRO

A planetary nebula is the fourth stage of a star's life. This type of nebula is an emission nebula with a shell of ionized gasess ejected from red giants.

FORMATION OF PLANETARY NEBULA(E)

A planetary nebula is formed when the star blows off the outer layers after it doesn't have enough fuel to burn.


Red Giants