The Multiverse and the Limits of Science By Professor Bernard Carr

Developments in both cosmology and particle physics suggest that our universe may just be one member of an ensemble of universes, termed the multiverse. Since the values of the physical constants may vary across the ensemble, this could provide a scientific basis for the suggestion that some of them are fine-tuned for the existence of complexity or even observers in the universe. The evidence for this comes from numerous unexplained ‘coincidences’ between the constants of physics. But is the multiverse a proper scientific proposal or just philosophical speculation? This depends on the definition of ‘science’ but it is argued that the nature of science has continually changed as our knowledge of the universe has expanded.

Bernard Carr is Emeritus Professor of Mathematics and Astronomy at Queen Mary University of London. His professional area of research is cosmology and astrophysics and includes such topics as the early universe, dark matter, black holes and…