The last decade has seen a revolution in cosmology. Thanks to new high precision measurements we now think we know what happened during the first moments after the creation of the universe. In parallel, string theory has matured into a theory capable of providing predictive models of the Big Bang and what may have happened even earlier. In this lecture I will give a review of the latest developments and treat questions such as: What has string theory to say about the creation of the universe? Can string theory be tested through cosmology? Are the laws of physics of the universe unique?