Colonising the Galaxies Graham Oppy 10.4225/03/562EF66FB8823 https://bridges.monash.edu/articles/journal_contribution/Colonising_the_Galaxies/2004327 Final Published Version: Sophia 39, 2, 2000, 117-42 2015-10-27 03:58:38 Frank Tipler Freeman Dyson self-replicating machines universal machines eschatology theism atheism God the physics of immortality Philosophy