The cosmos is vast, the largest stuff that exists. Particles are tiny, the smallest stuff that exists. Yet the particles compose the cosmos; there is nothing in the cosmos other than the particles, and the fields and forces that are associated with them. How does the whole system composed of cosmos and particles work?

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Alan Harvey Guth is an American theoretical physicist and cosmologist. Guth has researched elementary particle theory (and how particle theory is applicable to the early universe). He is currently serving as Victor Weisskopf Professor of Physics at the Massachusetts Institute of Technology, and he is the originator of the inflationary universe theory.

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Closer to Truth, hosted by Robert Lawrence Kuhn and directed by Peter Getzels, presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers.