How Many Galaxies Are Moving Away From Us Faster Than Light?

Solution to the physics puzzle I posed in the last video. Check out the original video here    • 97% of Galaxies Are Moving Faster Tha...  

I asked you if you could work out what proportion of the galaxies in the visible universe are travelling away from us faster than the speed of light. Here is how I did the calculation and reached the 97% number.

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