AI Overview
Redshift is a valid and tested scientific method used to determine cosmic distances, based on the stretching of light waves as space expands. [1, 2, 3]
The Science of Redshift
- Stretched light: As light travels across an expanding universe, its wavelength grows longer and shifts toward the red end of the spectrum. [1]
- Hubble's Law: Observations show that a higher redshift value correlates with a greater distance from us, a principle supported by extensive data and tested models. [1, 2]
- Independent checks: Astronomers calibrate redshift using other distance markers like supernovae and Cepheid variables. [1, 2, 3]
Opinions on absolute precision can vary for complex local structures, but the core relationship is fundamental to modern cosmology. [1, 2]