How has our picture of the universe developed in the history of cosmology? Starting from the Big Bang Theory to the concept of the accelerating expansion of the universe, this Mini Lecture explores the evolutionary origin and development of the universe. Historical as well as up-to-date lecture snippets of the physicists George Smoot, Brian Schmidt and John Mather, all held at the Lindau Nobel Laureate Meetings, illustrate the concepts used to analyse the universe. English Version: Deutsche Fassung: Editorial note: At 07:09 min (German version: 07:15) in the video it should say “1988” instead of “1998”. The corrected version will be published soon. The Lindau Nobel Laureate Meetings are continuously producing short educational films called ‘Mini Lectures’ which are available in the Lindau Mediatheque and are now gradually being published on the Lindau Meeting´s YouTube channel.