Abstract

This column is about the apparent quantization of cosmological red-shifts, the persistent astronomical observation that the red-shifts and velocities of distant galaxies are not randomly distributed but rather grouped in clumps of similar values. About eight years ago I had considered an AV column on this mysterious phenomenon, but after looking at the data then available I decided against it. As an experimental physicist I've seen too many "structures" in poor-statistics data that vanished as the statistics improved. Over the years, however, the red-shift data has improved to the point where the evidence that this is a real effect is now fairly convincing. So here it is, a persistent and puzzling astronomical observation that does not fit with our present understanding of the laws of physics and the universe and that has no accepted explanation.