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Tsync Tsync
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8 years ago
What is the meaning of a "closed" universe?
A) The universe will expand forever.
B) The universe is already collapsing back into another cycle.
C) The universe will someday stop expanding and begin collapsing inward.
D) The universe is in a steady state, with constant replacement of matter and energy.
E) The universe will slow down and stop expanding in an infinite amount of time.
Textbook 
Astronomy Today

Astronomy Today


Edition: 8th
Authors:
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Minoring in physics
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RatatouilleRatatouille
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8 years ago
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Tsync Author
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8 years ago
Exactly what I needed Smiling Face with Open Mouth
Minoring in physics
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8 years ago
Slight Smile
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