Which of the following is true regarding planetary nebulae?

Question

Quizplus · Accepted Answer

Planetary nebulae are typically formed when low-to-medium mass stars expel their outer layers as they approach the end of their lives and evolve into white dwarfs. These outer layers form a shell around the central star, often with a bipolar or elliptical structure. While some planetary nebulae can be roughly spherical, most exhibit some kind of asymmetry or bipolar structure. Planetary nebulae are formed when low and intermediate mass stars reach the end of their lives and shed their outer layers in a spherical or bipolar shape. While some are spherical, most have a bipolar structure. Option B is incorrect as planetary nebulae are formed during the post-main sequence stage. Option C is incorrect as planetary nebulae are not related to the formation of planetary systems. Option D is incorrect as planetary nebulae are not related to brown dwarfs. Option E is incorrect as coronas are not associated with planetary nebulae but are found around stars.

Which of the Following Is True Regarding Planetary Nebulae