Which of these will one day become a planetary nebula? Earth,Saturn,the Sun,or the Moon?

Answer 1

None of the planets have the mass to go ballistic and blow up like the sun. The nebula is a big ball of gas which has been blown apart when a star begins to run out of its fuel and collapses due to the inward gravitational pull that now becomes much greater than the outward pressure of the radiation that sun emits while burning its fuel. The collapse of matter into a smaller and denser mass causes it to heat up to a very high temperature this results in an explosion where the sun expands to about the orbit of Mars… Very bad news in about a few billion years.

Answer 2

A planetary nebula is called that because early observers thought these wisps looked somewhat like planets in orbit around a star.
A planetary nebula is the atmosphere that a star of about 1 solar mass puffs off when it starts to die - it expands to a red giant and when it collapses it leaves behind some of its outer envelope. Increased solar winds at this time in a star's life also expel more of its outer shell.

The moon and the planets are relatively stable and unchanging objects - they won't expand or collapse over the course of the solar system's lifetime.
So the answer is the sun.

Answer 3

The Sun. A planetary nebula is a shell of glowing gas left over after a dying star blows off its outer layers. They're pretty short-lived compared to the stars that formed them...while our Sun will have lived for about 10 billion years, the planetary nebula it leaves behind will cool and fade out after only a few thousand years. Not that we'll be around to see it, but still...pretty neat.

Answer 4

Sun

Answer 5

Sun. After 5.5 billions years the sun will erupts as the supernova and because of the density of the sun is medium causes its surface gaseous blow out and remain the solid core inside that we call its as white dwarft--the planetary nebula's center core.