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How much of the visible mass of our Galaxy is in the form of gas and dust spread out between the ...

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How much of the visible mass of our Galaxy is in the form of gas and dust spread out between the ...

How much of the visible mass of our Galaxy is in the form of gas and dust spread out between the stars?
A) 90% B) Less than 1% C) 50% D) 10%

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Discovering the Universe

Discovering the Universe

Edition: 7^th

Authors: Kaufmann, Comins

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