Robert Park - Why Aren’t Aliens Already Here?

It seems absurd in a universe with 100 billion galaxies, each with billions of stars and planets, that we are the only intelligent life. So where are all the others? This is the famous 'Fermi Paradox,' asked by Nobel Laureate Enrico Fermi. By any reasonable calculation, we should see evidence of other civilizations all over the universe, but we see nothing.

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Robert Lee Park is an Emeritus Professor of Physics at the University of Maryland, College Park and a former Director of Public Information at the Washington office of the American Physical Society.

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