The light spread to the dust motes in the air and curtained the whole sky with shimmering haze. It bathed the snow cover of the Earth, and reflected its golden image against the trees and the walls of the buildings, and penetrated the windows. It gilded the stark, charcoal skeletons of the ruins it had created. It spread over the whole Earth and penetrated every pore. Ken had a momentary illusion that there was not a particle of substance in the world not permeated and illumined by the comet's light. He felt as if it were inside his own being, through his vitals, and shining in the corridors of his brain. For a moment the old hate returned. He wanted to shut his eyes against that omnipresent light and to run with all his strength to some secret place where it could never penetrate. He recalled the words of Dr. Larsen that seemed to have been uttered so long ago that they were scarcely within memory: "The universe is a terrible place that barely tolerates living organisms. It is a great miracle that here in this corner of the universe living things have found a foothold. It does not pay ever to forget the fierceness of the home in which we live." There was no closing the eyes against this. He looked again at the comet, the representative to Earthmen of all the fierceness and terror that lay in outer space, beyond the thin tissue of atmosphere that protected man and his fragile life. He would remember all the days of his life that the universe might be beautiful and exciting and terrible, but whatever it was, it held no friendliness toward man. It could destroy him with a mere whim of chance occurrence. Man had gained a foothold, but there was a long way to go to an enduring security. * * * * * On the day of the official beginning of operation of the giant projector in Jenkin's pasture, there was a little ceremony. Sheriff Johnson stood on an improvised platform and with an impressive gesture threw the switch that officially turned the power into the great instrument. It had been successfully tested previously, but now it was launched in an operation that would not cease until the last trace of comet dust had fallen from the sky and was mingled with the dust of the Earth. Most of the townspeople who were well enough to do so turned out for the ceremony. During the construction, a guard had been kept to prevent sabotage of the projector, but there had been no attempts made on it. Now the people stood in the trampled snow and ice of the pasture, staring up at the giant structure, with a quality of near-friendliness in their eyes and in the expressions of their faces.