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It is more difficult to determine the total amount of dark matter in an elliptical galaxy than in a spiral galaxy. Why
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It is more difficult to determine the total amount of dark matter in an elliptical galaxy than in a spiral galaxy. Why

User Ryanstewart
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Answer:

Elliptical galaxies lack the atomic hydrogen gas that we use to determine orbital speeds at great distances from the centers of spiral galaxies.

User Edparry
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