Helge Kragh tells us the history of twentieth-century cosmology in a most lively and accessible form. Through his ingenious recourse to fictional interviews, he succeeds in conveying both the scientific stakes and the human complexity of one of the greatest adventures of mankind. (Olivier Darrigol, Centre National de la Recherche Scientifique)An ambitious and highly engaging book that is also a very major contribution to the history of modern cosmology. (Robert Smith, University of Alberta)A rich and highly imaginative narrative that uses fictional interviews as the platform for the story, which has a fine historiographical style and is presented with flair. This is an absorbing and different approach to the history of cosmology. (Simon Mitton, University of Cambridge)