Leonard Suskind discusses the idea that the universe is flat, that it was created (after the big bang) by the oscillation of waves that freeze when they expand beyond the horizon line which slows the expansion. (March 16, 2009)

Felix Bloch Professor in Physics Leonard Susskind discusses the central concepts of astrophysics, cosmology and relativity. (March 9, 2009)

Felix Bloch Professor in Physics Leonard Susskind discusses the central concepts of astrophysics, cosmology and relativity. (March 2, 2009)