Apparent need of antimatter galaxies for the stability of the universe.

Fritz Zwicky's hypothesis, according to which the cosmological redshift is due to galactic light losing energy to intergalactic media, without need of Universe expansion, seems to have been recently confirmed by recent mathematical, theoretical and experimental studies via measurements on Earth. But the return to a static universe would imply the inevitable prediction that the universe should collapse due to gravitational attractions among galaxies. In this paper, we present apparently for the first time a cosmological model in which the stability of the universe is achieved under the condition of admitting an equal number of matter and antimatter galaxies (as they are hypothesized in Isodual Theory of Antimatter) at such a large mutual distance for which gravitational interactions are neglectable. [ABSTRACT FROM AUTHOR]