Perhaps it was the immense and grand structure of the spaceship that startled them. People who had been cheering excitedly for the successful ignition of controlled nuclear fusion were suddenly reminded of the fear once instilled by "Above X Fortress," and they snapped back to their senses.
The reason was none other.
The disparity was too vast!
Even the most top-tier physicists on Earth could not provide a reasonable explanation for the power source and propulsion method used by that spaceship. They could only deduce from traces within the "Game" that it might have adopted some form of anti-gravity technology.
As for how exactly it was achieved, no one could offer a reasonable explanation.
This also indicated that from the most fundamental logic of scientific technology, human civilization was not merely a little behind but significantly lagged behind the other side...
