Which of the Following Is Not a Place Where Astronomers

question 17

Multiple Choice

Which of the following is not a place where astronomers believe interstellar dust grains can form?

• A) in the cooling winds of material ejected from red giant stars
• B) in the material flowing out of exploded stars, after it has cooled
• C) in denser clouds of interstellar matter
• D) in HII regions
• E) all of the above are places where dust grains regularly form
• Section 20.6: Interstellar Matter around the Sun

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