Catch a Falling Star

A hundred thousand years from now, it was discovered that a star was approaching the world on a collision course. Its discoverer, Creohan, figured there might be time to save the world if he could arouse everyone to the danger. But the Earth had become a strange and kaleidoscopic place in that distant era. Too many empires had risen and fallen, too many cultures had spread their shattered fragments across a planet whose very maps had long since been forgotten. People were too busy with their own private dreams to pay attention to one more new alarm.