Multiple Choice
Why are emission nebulae associated with young stars?
A) Young stars have not moved far from the gaseous nebulae where they were born.
B) Only hot stars can ionize nearby gas; hot stars are high-mass, so must be young.
C) The dust that makes emission nebulae glow is destroyed by old stars.
D) Young stars produce the blue light that is scattered by emission nebulae.
Correct Answer:
Verified
Correct Answer:
Verified
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