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William G. Tifft
Americana astronomer

William G. Tifft

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Americana astronomer
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Biography

William G. Tifft is Emeritus Professor/Astronomer at the University of Arizona. His main interests are in galaxies, superclusters and what Tifft calls redshift problems (see redshift quantization). He was influential in the development of the first redshift surveys [1] and was an early proponent of manned space astronomy, conducted at a proposed moon base for example. In retirement, he is a principal scientist with The Scientific Association for the Study of Time in Physics and Cosmology (SASTPC).[2]
He has an A.B. in Astronomy from Harvard University (1954), and Ph.D. in Astronomy from the California Institute of Technology (1958) where he wrote his dissertation on photoelectric photometry, a copy of which is available online.

Redshift quantization

Based on observations of nearby galaxies, Tifft has put forward the idea 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. Subsequently Tifft and Cocke put forward a theory to try to explain the quantization. Tifft's results have been largely replicated by Croasdale and later Napier and Guthrie. Croasdale did a comprehensive analysis of the statistical significance and confirmed the special frame in which quantization is found to be the same over the whole sky. 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, 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.

The contents of this page are sourced from Wikipedia article. The contents are available under the CC BY-SA 4.0 license.
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