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'A Universe From Nothing' by Lawrence Krauss, AAI 2009
Richard Dawkins Foundation for Reason & Science
Lawrence Krauss's 2009 talk on the current picture of the universe, how it will end and how it could have come from nothing. It covers the expanding universe, cosmic background radiation and the cosmological constant.
HN regards it as a famous, mesmerizing talk, especially for the point that distant galaxies will become unobservable.
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