Multiple Choice
What is a planetary nebula?
A) gas created from the remains of planets that once orbited a dead star
B) gas ejected from a low- mass star in the final stage of its life
C) the remains of a high- mass star that has exploded
D) interstellar gas from which planets are likely to form in the not- too- distant future
Correct Answer:
Verified
Correct Answer:
Verified
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