If there is dark energy in the universe with a positive energy density, what is the future of the universe? (See Figure 25-18 of Universe, 11th ed.(in the text) )
A) It will expand forever at a rate that depends upon how much matter there is in the universe.
B) It will expand forever at an accelerating rate, regardless of how much matter there is in the universe.
C) The future of the universe is not related to the geometry of space.
D) It will expand to a maximum size and then recollapse.
Correct Answer:
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