Multiple Choice
What is dark energy?
A) energy associated with the matter that has fallen into a black hole
B) matter-energy needed to bridge the gap between the energy we see or infer and the energy needed to make the universe flat
C) energy associated with dark matter
D) unseen matter-energy needed to make the observed curvature of space spherical (as we believe it should be) , while the observed matter-energy only makes it hyperbolic
Correct Answer:

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Correct Answer:
Verified
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