Why Are Emission Nebulae Associated with Young Stars

question 55

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.

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