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2 years ago in Astrophysics By Maneesh Upadhya

What causes the cosmological redshift?

What is the physical mechanism responsible for cosmological redshift?

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By Kanika Answered 1 year ago

The observed cosmological redshift is primarily due to the expansion of space itself, stretching the wavelength of light as it travels through the universe, not the Doppler effect of receding galaxies.

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