Cosmological redshift vector illustration. Stretched and original space wavelength with earth and distant galaxy. Doppler effect astronomical phenomenon distance example.
Car police top view. Doppler effect. Change of wavelength caused by motion of the source. The Doppler effect can be observed for any type of wave - water wave, sound wave, light wave.
Light year for Cosmic distances from planet Earth to Proxima Centauri. Speed of light. Astronomical unit. illustration. Vector poster