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- 21:19, 25 January 2026 DanteWashere talk contribs created page Redshift (Created page with "'''Redshift''' refers to the increase in wavelength of electromagnetic radiation observed from a source moving away from an observer or embedded in an expanding spacetime. It is a key observational concept in astronomy and cosmology. Redshift is discussed in astrophysics, spectroscopy, and observational astronomy. == Status == Redshift is measured through spectral analysis of astronomical sources and is used to infer motion, distance, and gravitational effects. Its int...")