If It [the Universe] Was Expanding Fairly Slowly, The Force Of Gravity Would Cause It Eventually To Stop Expanding And Then To Start Contracting. However, If It Was Expanding At More Than A Certain Critical Rate, Gravity Would Never Be Strong Enough To Stop It, And The Universe Would Continue To Expand Forever.
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If It [the Universe] Was Expanding Fairly
Stephen Hawking
If It [the Universe] Was Expanding Fairly Slowly, The Force Of Gravity Would Cause It Eventually To Stop Expanding And Then To Start Contracting. However, If It Was Expanding At More Than A Certain Critical Rate, Gravity Would Never Be Strong Enough To Stop It, And The Universe Would Continue To Expand Forever.
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