It all started with the Big Bang, but then what? In a special broadcast from the Origins Symposium at Arizona State University, cosmologists discuss the origin of the universe, how the Large Hadron Collider research fits in and what particle physics can explain about how the universe began.
Lawrence Krauss, foundation professor, School of Earth and Space Exploration and physics department, inaugural Director, Origins Initiative, Arizona State University, Tempe, Ariz.
Brian Greene, professor of mathematics and physics, Columbia University, New York, N.Y.
Michael Turner, professor, departments of astronomy and astrophysics and physics, Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Ill.
Steven Weinberg, professor of physics and astronomy, The University of Texas at Austin, winner of the Nobel Prize in Physics, 1979, Austin, Tex.