2306 / 4450 in collection leonow6
There was the selfcontained artificial world embarking on voyagessupernova4 that might last for many generations. A few scientists most of them beachcombers on the wilder shores of theoretical physics askedmonolith9 the disturbing question Are we certain that the speed of light which no material object could exceed. As an abode of life Saturn was even more hostile than Jupiter and its many moons were frozen in an eternal winter three hundred degrees below zero.T. They were fond of using an expressive phrase coined by a Princeton mathematician of the last century Wormholes in space.... ALTOGETHER