| Olber�s
Paradox:� Answer |
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| � | It
could be that the Universe doesn�t extend far enough � |
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| but
that doesn�t seem to be the right answer |
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| � | The finite age of the universe limits how far we can see: |
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| If it has age T, we can only see out as far as d=cT |
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| The light from farther stars hasn�t had time to reach us yet |
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