A year before his ordination as a diocesan priest, the young Lemaître submitted an audacious dissertation that was to earn him Fellowships to study at Cambridge, MIT and Harvard, and launched him on a scientific path of ground-breaking discoveries. Almost a century after Lemaître’s seminal publications of 1927 and 1931, this highly pedagogical treatise is still of timely interest to young minds and remains of great value from a history of science perspective. The original French manuscript as well as the recently discovered additions are preserved in the Georges Lemaître Archives at (UCLouvain) in Louvain-la-Neuve, Belgium. weiterlesen