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Aseyhe t1_j2mjzx8 wrote

Reply to comment by CokeDiesel4 in Is any "movement" visible in the fluctuations of the CMB over time, or does it appear static? by JarasM

No, the time light took to reach us only correlates with the amount that the light's frequency is shifted and not with the light's absolute frequency. For example, the CMB is actually a whole spectrum of frequencies. Those frequencies don't take (significantly) different amounts of time to reach us; if they did, the CMB spectrum wouldn't be such a perfect blackbody spectrum.

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CokeDiesel4 t1_j2o8drm wrote

Wow that's incredible! If I understand correctly that means the light being emitted from an object is one long stream and we can access different segments of it by tuning into different frequencies?

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