How big is the universe



The Big Bang: fact or fiction?

Dr Cormac O’Raifeartaigh (WIT)

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How old is the universe? How did it come into being?

The Big Bang model of the origin of the universe is one of the most famous of all scientific theories. But is it just a theory or established fact? The evidence for the Big Bang will be reviewed in this session, and the limitations of the model explained. Recent discoveries that have revolutionized our view of the universe will also be discussed.

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