If light traveled far enough, would it get “red-shifted” to the point of no longer being a wave?

Question

From what I understand, red-shifting is when light from a distant source travels through expanding space which stretches out the wave making it appear more red by the time it reaches earth.

So if a light wave traveled far enough, would it “red-shift” all the way down the EM spectrum eventually losing its waviness and becoming a straight line?

In: Physics

Answer 1

Light isn’t changing as it gets redshifted instead the observer is moving and so the wave takes time to catch up with the eye and it is that movement which stretches out the wave.