It is possible that total colonization wave speed is much higher, closer to с, but I suggest just to put some weight to the hypothesis that is around 0.5-0.7c because of some unknown tradeoffs. I would estimate such outcome as 30 per cent. Only in that case observing alien astroengineering and SETI is possible.
Thanks for interesting link.
It is possible that total colonization wave speed is much higher, closer to с, but I suggest just to put some weight to the hypothesis that is around 0.5-0.7c because of some unknown tradeoffs. I would estimate such outcome as 30 per cent. Only in that case observing alien astroengineering and SETI is possible.