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Quantum to Cosmos: Ideas for the Future festival attracted a vast new audience of all ages and from all walks of life and inspired a fascination with science and the power of theoretical physics. We invite you to watch all lectures, discussions, and "The Agenda with Steve Paikin" sessions on-demand. Click the 'Play' button on the image to the left of the event listing.

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Lecture Series presented by KPMG - The Origin of the Universe and the Arrow of Time
Sean M. Carroll
Saturday Oct 17, 2009 @ 8:00 pm

One of the most obvious facts about the universe is that the past is different from the future. We can turn an egg into an omelet, but can't turn an omelet into an egg. Physicists have codified this difference into the Second Law of Thermodynamics: the entropy of a closed system always increases with time. But why? The ultimate explanation is to be found in cosmology: special conditions in the early universe are responsible for the arrow of time. This talk will be about the nature of time, the origin of entropy, and how what happened before the Big Bang may be responsible for the arrow of time we observe today.

Theme: Cosmos

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