5 ms·
Some areas of space have a more matter than others e.g. galactic clusters, where the relative speed of the galaxies to each other is higher than the expansion.
by ozzydave 4y ago
Some areas of space have a more matter than others e.g. galactic clusters, where the relative speed of the galaxies to each other is higher than the expansion. This video from the excellent Space Time series helps explain it: https://youtu.be/bUHZ2k9DYHY https://youtu.be/bUHZ2k9DYHY
- PaulDavisThe1st 4y agoFrom TFA: > The motions of individual galaxies are hundreds of times larger than the effect of cosmological expansion