Astronomy Magazine
How long do planetary nebulae last on average? What are some of the controlling factors? Doug KaupaCouncil Bluffs, Iowa To understand how long a planetary nebula remains visible, we first need to understand why a planetary nebula is visible at all. When a solar-type star (one with a mass of 0.8 to eight times that Continue reading "How long do planetary nebulae last?" The post How long do planetary nebulae last? appeared first on Astronomy Magazine .
Go to News Site