Answered

What is the "cosmological redshift"?
the stretching of wavelengths of photons by the Doppler shift, because they are emitted by galaxies
that
are moving away from us
O the loss of energy of photons as they interact with virtual particles in the vacuum, so that their
wavelengths gradually increase as they travel toward us through space
O the stretching of the wavelengths of photons as they travel through expanding space
O the stretching of the wavelengths of photons as they pass through absorbing matter in galaxies
between us and the emitting galaxy



Answer :

GinnyAnswer
The correct answer is: - The stretching of the wavelengths of photons as they travel through expanding space. Cosmological redshift occurs when light from distant galaxies or celestial objects is shifted to longer wavelengths as it travels through the expanding universe. This phenomenon is a result of the expansion of space itself, causing the wavelengths of photons to stretch out, leading to a redshift in the light observed from these objects. This redshift is a crucial piece of evidence for the expanding universe and plays a significant role in understanding the large-scale structure and evolution of the cosmos.

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