What specific celestial structure is created when a star casts off its outer layers after the red giant phase?
Answer
A planetary nebula
When a star reaches the end of its life, it can no longer generate enough outward pressure to maintain its mass. Consequently, the star ejects its outer layers into space. This ejected material forms a complex and often beautiful structure known as a planetary nebula, while the remaining core continues to collapse.
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What Are Red Giant Stars? - YouTube
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