| Implications of Slowing Expansion Rate |
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| � | Our
calculation of age T=1/Ho = 13.6 billion years
assumed constant rate |
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| � | Gravity
should slow the expansion rate over time |
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| � | If
density is high enough, expansion should turn around |
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| � | If
expansion was faster in past, it took less time to get to present size |
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| � | For �Flat� universe� T =
2/3 * (1/Ho) = 9.3 billion years |
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| � | contradiction with other ages if T is too small |
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