This is an old revision of this page, as edited by ජපස (talk | contribs) at 23:26, 8 January 2006. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
Revision as of 23:26, 8 January 2006 by ජපස (talk | contribs)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)Tired light is the hypothesis that light slowly loses energy as it travels through space. Since a decrease in energy corresponds to an increase in wavelength, this effect would produce a redshift in spectral lines that increases with the distance of the source. It was originally postulated in 1929 by Fritz Zwicky as an alternative to the standard interpretation that the redshift is caused by expansion of the universe. Most physicists and astronomers do not believe that such an effect can account for cosmological redshifts.
 | This astronomy-related article is a stub. You can help Misplaced Pages by expanding it. |