redshift

redshift [ˈredˌʃɪft]

n

(Astronomy) a shift in the lines of the spectrum of an astronomical object towards a longer wavelength (the red end of an optical spectrum), relative to the wavelength of these lines in the terrestrial spectrum, usually as a result of the Doppler effect caused by the recession of the object Compare blueshift

Thesaurus

Noun

1.

redshift - (astronomy) a shift in the spectra of very distant galaxies toward longer wavelengths (toward the red end of the spectrum); generally interpreted as evidence that the universe is expanding red shift astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole propagation - the movement of a wave through a medium