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The Red Shift of the galaxies

Galaxies that are moving relative to the Earth have their light shifted by an effect known as the Doppler effect.

Those moving away from us have their light shifted towards the red end of the spectrum and we call this shift the Red Shift. Some galaxies are moving towards us and the light coming from them is shifted towards the blue end of the spectrum.


 
 
 
© Keith Gibbs 2013