Which of the Following Is True Regarding Planetary Nebulae

question 93

Multiple Choice

Which of the following is true regarding planetary nebulae?

• A)Some are spherical, but most have bipolar structure.
• B)They are the result of the mass loss during the main sequence stage of the most massive stars.
• C)They are the rings of material surrounding newly formed stars that will eventually form theplanetary systems.
• D)They are the ejected envelopes of highly evolved brown dwarf stars.
• E)They are the coronas surrounding most blue stragglers.

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