red
shift
Plural
redshifts
1
the shift of light waves towards longer wavelengths, indicating the motion of an object away from the observer, commonly observed in the spectra of distant celestial bodies
- Astronomers use redshift measurements to determine the velocity and distance of galaxies in the universe.
- The observation of redshift in a star's spectrum indicates its motion away from Earth.
- Edwin Hubble's discovery of red shift played a crucial role in establishing the expanding nature of the universe.
- Telescopes equipped with spectrographs enable astronomers to analyze redshift in the light emitted by celestial objects.
- The Doppler effect causes the red shift phenomenon when light sources move away from an observer.