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Flatness Problem why so close to a critical
universe?
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Horizon Problem why is background all same T?
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SOLVED BY AN INFLATIONARY UNIVERSE
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Grand Unified Theories of combined
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Gravity/Weak/Electric/Nuclear forces predict very
rapid
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expansion at very early time: inflation
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When inflation ends, all matter moving away with
v=vescape
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(flat universe curvature forced to zero)
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Also solves horizon problem everything was
in causal contact
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