Which of the Following Is NOT a Way in Which

question 18

Multiple Choice

Which of the following is NOT a way in which astronomers detect dark matter in clusters of galaxies?

• A) By determining the amount of mass necessary to gravitationally collapse clouds of gas to form the number of stars present
• B) By determining the amount of mass necessary to gravitationally hold onto the hot gas surrounding galaxy clusters
• C) By determining the amount of mass necessary to gravitationally hold a cluster of galaxies together
• D) By determining the amount of mass necessary to gravitationally lens images of distant objects

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