Abstract
RECOGNITION of the nature of radio and ‘star’ galaxies has prompted many theoretical interpretations during recent years. The vast amount of energy emitted is difficult to account for on present astrophysical theory, and has led to several cosmological explanations. In particular, McCrea1 envisages a form of the steady-state universe in which matter is created in the nuclei of galaxies, where the density of matter is already high, as a property of existing matter. Thomas2 suggests that violent metric adjustments (explosions) must occur to prevent the infinite metric discontinuity at the Schwarzschild radius of a collapsing sphere. Out of these ‘surface explosions’ matter is created. How the sphere collapses to this state in a finite time (to an external observer) is unspecified, and the possibility has been seriously questioned3.
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