How does the expansion of space affect the light emitted by the most distant, ancient objects in the universe?

Answer

It causes cosmological redshift, stretching the wavelength into lower energy ranges

The expansion of space stretches the wavelength of traveling light, a process called cosmological redshift, which shifts ancient, high-energy light primarily down the spectrum into the microwave range.

How does the expansion of space affect the light emitted by the most distant, ancient objects in the universe?

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