Early understanding. Ancient ideas ; Claudius Ptolemy ; Science approaches the problem ; The Copernican Principle

Cosmology in the early 20th century. Albert Einstein ; Another revolution in cosmology ; The cosmological constant ; The expanding universe ; Edwin Powell Hubble ; The uniform universe

Looking backward : the Big Bang. Friedmann-Lemaître and Gamow models ; Predictions of the Big Bang Theory ; Antimatter ; Evidence for the Big Bang Theory ; Cosmic background ; Explorer (COBE)

Looking forward : the fate of the universe. Difficulties and their solutions ; Inflation ; Dark matter ; WIMPs ; Dark energy and the runaway universe.