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tired light
subjectfact 
tired lightis a kind of cosmology theory2001-09-27 09:34:00.0
has definition The hypothesis that light may be degraded in energy, thereby increasing in wavelength and becoming redshifted, during its passage through intergalactic space. This would provide an alternative to the Big Bang model in accounting for the redshifts of distant galaxies. However, there is no evidence for any such tired-light effect.has source: Silk, J. 1990 The Big Bang, W. H. Publishers, New York, 2001-09-27 09:34:00.0
cosmology theoryhas domain cosmology2001-09-27 09:34:00.0
theoryhas validity correct or incorrect with caveats2001-09-27 09:33:53.0
has author or reasearch group2001-09-27 09:33:53.0
has date or a range of dates for which the theory was active2001-09-27 09:33:53.0