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socialister t1_j2ko2s5 wrote

Reply to comment by InSight89 in Is any "movement" visible in the fluctuations of the CMB over time, or does it appear static? by JarasM

Expansion is a big factor but you can think of the light of the CMB as having originated from everywhere. The part of the CMB we observe is a growing bubble. The light is traveling uninterrupted after having been emitted in the early universe.

To the second question, the expansion of space is not that significant between nearby galaxies.

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