Based on observations of nearby galaxies, Tifft proposed that the
redshifts of galaxies are quantized, or that they occur preferentially as multiples of a set number. These findings on
redshift quantization were originally published in 1976 and 1977 in the
Astrophysical Journal. The ideas were controversial when originally proposed; the editors of the Astrophysical Journal included a note in one of the papers stating that they could neither find errors within the analysis nor endorse the analysis. and later Napier and Guthrie. Since the initial publication of these results, Tifft's findings have been used by others, such as
Halton Arp, in making an alternative explanation to the
Big Bang Theory, which states that galaxies are redshifted because the universe is expanding. However, they have not found widespread support and are now dismissed by the majority of astronomers. Tifft himself, when interviewed for the popular science magazine
Discover in 1993, stated that he was not necessarily claiming that the universe was not expanding. ==External links==