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Mrrafil [7]
3 years ago
6

How are planetary nebulae formed?

History
1 answer:
skelet666 [1.2K]3 years ago
8 0

Answer:A planetary nebula is created when a star blows off its outer layers after it has run out of fuel to burn. These outer layers of gas expand into space, forming a nebula which is often the shape of a ring or bubble. About 200 years ago,

Explanation:

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