Roger Penrose, British mathematician and relativist who in the 1960s calculated many of the basic features of black holes. He notably proved, with Stephen Hawking, that all matter within a black hole collapses to a singularity with infinite density and z
Most cosmologists today accept the universe underwent a very rapid period of expansion called inflation. But inflation seems to lead to an infinite multiverse. Not everyone is happy with this multiverse ; and some cosmologists have sought alternatives to inflation. These alternative schemes are often ...
Finally, Penrose describes how fashion, faith, and fantasy have ironically also shaped his own work, from twistor theory, a possible alternative to string theory that is beginning to acquire a fashionable status, to "conformal cyclic cosmology," an idea so fantastic that it could be called "...
Roger Penrose, Reinhard Genzel, and Andrea Ghez. The 2020Nobel Prize in Physicshas been awarded, one half to Roger Penrose, University of Oxford, UK “for the discovery that black hole formation is a robust prediction of the general theory of relativity,” and the other half jointly to Reinh...