Theory of Everything

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I have a question. Only 4% of the universe is observable, how can that be?
 

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By using an overly strict definition of 'observed'.
 
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Ryan_m_b
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This is not strictly true. 4% of the universe is made up of ordinary matter, 23% is dark matter and the rest is dark energy. We don't yet have a good understanding of what the last two are.

Bear in mind that this does not have much to do with a Theory of Everything.
 

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