Doppler Effect Proven by Red Light from Distant Galaxies

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SUMMARY

The discussion confirms that the red light observed from distant galaxies is indeed evidence of the Doppler Effect, indicating that these galaxies are moving away from Earth. This phenomenon is supported by the principles of redshift, which is a direct consequence of the Doppler Effect in light waves. The mention of "tired light" theory is noted but dismissed as outdated, reinforcing the consensus on the Doppler Effect's validity in explaining cosmic redshift.

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  • Study the mathematical formulation of the Doppler Effect in light
  • Explore the concept of redshift and its implications in cosmology
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Kglocc
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claim: the red light observed from distant galaxies proves they are moving away. (doppler effect right?)
null: because light becomes red diffracting through a medium like space dust or even by gravitation.
sorry if I'm off base or 50years behind, just a general "yes/no" or "get out of my forum you pea-brained biologist" will do .

Roger that. I'm bustin out on this funk.
 
Last edited:
Space news on Phys.org
Make that 80 years, not 50. :smile:

Tired Light (Wikipedia)
 

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