Multiple Choice
What is a planetary nebula?
A) The bipolar jets ejected by a T Tauri variable
B) A planet surrounded by a glowing shell of gas
C) The disc of gas and dust surrounding a young star that will soon form a solar system
D) The ejected envelope, often bipolar, of a red giant surrounding a stellar core remnant
E) A type of young, medium mass star
Correct Answer:

Verified
Correct Answer:
Verified
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