>>12463378I think that 'the edge' is only going at/beyond c RELATIVE to the observer on earth... not local locations in close proximity to a location at the edge.
If you were on a planet at the edge and looked back at earth (if you could) then you would see earth 'frozen' in time and fading/red shifting because the space between the observer and the observed is expanding, stretching out the wavelengths of light traveling across the vast distance.
It would appear almost frozen and faint(red) because the observer is effectively moving away from the observed at almost c due to the space between them getting larger, thus the lightwaves have to travel a greater distance and arrive at a slower rate.
When the two locations are moving away at or beyond c no lightwaves can ever reach the observer and it will appear dark.
This is why it is called the 'observable universe', it describes what can be physically seen and what cannot be.
