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5 questions
How big is an average nebula
9 trillion miles
9 trillion kilometers
4 quintillion miles
3 miles
How long do they live
10,000 years
15 years
100,000 years
15,000 years
What are they
The outside shell of gas from a dying star.
A normal star
The remains of a black hole
The remains of a planet
Our sun will become a planetary nebula one day
True
False
The sun will destroy the planets in the solar system
True
False
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