
Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) designates a quantitative problem, for which you should show all your work.
Adding Up Asteroids. It’s estimated that there are a million asteroids measuring 1 kilometer across or larger. If a million such asteroids were combined into one object, how big would it be? Compare your answer to the size of Earth. (Hint: Assume that each asteroid is a sphere with a radius of 0.km; the volume of a sphere is.)

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