1.the globular cluster m13 belongs to the of the milky way galaxy. 2. a(n) contains hot, ionized gas but very little cool gas or dust. 3. the type of galaxy known as a(n) was more common in the universe 10 billion years ago. 4. the milky way is a(n) . 5. our sun belongs to the of the milky way galaxy. 6. scientists investigating study how the distribution of galaxies changes with time.

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