Alan Guth

Alan Guth is the physicist who in 1980 outlined the theory of cosmological inflation to answer several questions unaddressed in the big bang theory. Some of these include why the universe has endured for such a long time. Using just the theory of gravity, a reasonable expectation would be that a dense universe would either expand into infinity or collapse. During its almost 14 billion years of existence, our universe has evolved relatively slowly and maintains a state of equilibrium.

Lisa Randall

Dr. Randall is important to this story because she is the narrator/author who pulled together history, research, observation and her own training as a physicist at Harvard University to synthesize her unique theory of how dark matter affects physical objects in the solar system. She presents scientific theory with clarity and simplicity so even the non-scientist can understand her work. She comes across as dedicated...