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are you an Astrophysics Wonk?

Question 1 of 5 What object is constructed primarily of clumped together dust?

Question 2 of 5 How big are interstellar dust grains?

Question 3 of 5 What percentage of the Milky Way's visible mass is in the form of dust?

Question 4 of 5 Why is it important to study interstellar dust?

Question 5 of 5 By what name is interstellar dust commonly called?