The following night was again cold and clear. High in the heavens, where Neptune should have been, hung a disk of enormously greater size. Neptune itself was almost invisible, hundreds of millions of miles beyond its scheduled position. As nearly as Phobar could estimate, not one hundredth of the sun's rays were reflected from the surface of the dark star, a proportion far below those for the other planets. Phobar had a better view of the flame-path, and it was with growing awe that he watched that strange swathe in the sky during the dead of night. It shot out from the dark star like a colossal beam or huge pillar of fire seeking a food of worlds. With a shiver of cold fear he saw that there were now three of the bands: one toward Neptune, one toward Saturn, and one toward the sun. The first was fading, a milky, misty white; the second shone almost as bright as the first one previously had; and the third, toward the sun, was a dazzling stream of orange radiance, burning with a steady, terrible, unbelievable intensity across two and a half billions of miles of space! That gigantic flare was the most brilliant sight in the whole night sky, an awful and abysmally prophetic flame that made city streets black with staring people, a radiance whose grandeur and terrific implication of cosmic power brought beauty and the fear of doom into the heavens! * * * * * Those paths could not be explained by all the physicists and all the astronomers in the Five World Federation. They possessed the properties of light, but they were rigid bands like a tube or a solid pillar from which only the faintest of rays escaped; and they completely shut off the heavens behind them. They had, moreover, singular properties which could not be described, as if a new force were embodied in them. Hour after hour humanity watched the spectacular progress of the dark star, watched those mysterious and threatening paths of light that flowed from the invader. When dawn came, it brought only a great fear and the oppression of impending disaster. In the early morning, Phobar slept. When he awoke, he felt refreshed and decided to take a short walk in the familiar and peaceful light of day. He never took that walk. He opened the door on a kind of dim and reddish twilight. Not a cloud hung in the sky, but the sun shone feebly with a dull red glow, and the skies were dull and somber, as if the sun were dying as scientists had predicted it eventually would. Phobar stared at the dull heavens in a daze, at the foreboding atmosphere and the livid sun that burned faintly as through a smoke curtain. Then the truth flashed on him--it was the terrible path of fire from the dark star! By what means he could not guess, by what appalling control of immense and inconceivable forces he could not even imagine, the dark star was sucking light and perhaps more than light from the sun! * * * * *