White Dwarf
An average star like our sun will eventually become a red giant as it exhausts its nuclear fuel. After that, it will shed its outer layers to form a planetary nebula and leave behind a dense core called a white dwarf.
No, a planetary nebula is not surrounded by planets. It is an expanding shell of glowing gas ejected by a dying star, which is usually located in the center. The term "planetary" is a historical misnomer as these nebulae have nothing to do with planets.
When the core of a star blows its surface into space to form a planetary nebula, it sheds its outer layers of gas, exposing the hot, dense core of the star called a white dwarf. The white dwarf emits ultraviolet radiation that ionizes the ejected gas, causing it to glow and form the planetary nebula.
No, the sun will not become a planetary nebula. It is not massive enough to undergo the process that leads to the formation of a planetary nebula. Instead, the sun will eventually evolve into a red giant and then shed its outer layers to form a planetary nebula.
The Cats's Eye Nebula is a perfect example of a planetary nebula. See related link for a pictorial.
A planetary nebula consists of gas ejected from old red giant stars.
planetary nebula
planetary nebula
Typically it is called a planetary nebula. It has nothing to do with planets.
An average star like our sun will eventually become a red giant as it exhausts its nuclear fuel. After that, it will shed its outer layers to form a planetary nebula and leave behind a dense core called a white dwarf.
No, a planetary nebula is not surrounded by planets. It is an expanding shell of glowing gas ejected by a dying star, which is usually located in the center. The term "planetary" is a historical misnomer as these nebulae have nothing to do with planets.
When the core of a star blows its surface into space to form a planetary nebula, it sheds its outer layers of gas, exposing the hot, dense core of the star called a white dwarf. The white dwarf emits ultraviolet radiation that ionizes the ejected gas, causing it to glow and form the planetary nebula.
A galaxy is the biggest among the three. Galaxies contain billions to trillions of stars, as well as other celestial objects like planets and planetary nebulae. A planetary system refers to a star with its orbiting planets, while a planetary nebula is a glowing shell of gas ejected by a dying star.
No, the sun will not become a planetary nebula. It is not massive enough to undergo the process that leads to the formation of a planetary nebula. Instead, the sun will eventually evolve into a red giant and then shed its outer layers to form a planetary nebula.
Planetary nebula is a misnomer because it's a nebula but it has nothing to do with planets, it's about stars.
The Cats's Eye Nebula is a perfect example of a planetary nebula. See related link for a pictorial.
A star like our sun will shed a planetary nebula after its 'death'