Redshift diagram

Référence de la vidéo 11926612
Redshift. Animation illustrating the effect of redshift. This is a form of the Doppler effect, seen as an increase in the wavelength of light during its journey to Earth. In this animation, light (blue wave) is emitted from a galaxy, and in the time it takes to travel to Earth, the expansion of the universe causes its wavelength to increase, changing its colour through green and yellow to red. The discovery of redshift, and the fact that more distant galaxies were more shifted, was important evidence backing up the expanding universe and Big Bang model of cosmology.
Licence : Droits gérés
Crédit : Science Photo Library / EUROPEAN SOUTHERN OBSERVATORY
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Durée : 15 Secondes
Aspect ratio : 16/9
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  • This clip may not be used by or to promote the arms, nuclear power or tobacco industries or any religious organisation, or in any discriminatory way, or to imply the endorsement by ESO of any product, service or activity

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