About four o'clock in the afternoon, it got suddenly hotter again, as abruptly as before. It stayed hotter. Something made Cathy look up. There was a thin cloud overhead, just the right thickness to act something like a piece of smoked glass. She could look directly at the sun through it, examine the disk with her naked eye. But it wasn't a disk any longer. Cetis Gamma was a bulging, irregularly shaped thing twice its normal size. As she looked, it grew larger still. * * * * * Out on the ninth planet, Rhadampsicus was absorbed in his contemplation of Cetis Gamma. With nothing to interfere with his scanning, he could follow the developments perfectly. There had been first one gigantic prominence, then two, which separated to opposite sides of its equator. Then two other prominences began to grow between them. For two full days, the new prominences grew, and then split, so that the sun came to have the appearance of a ball of fire surrounded by a ring of blue-white incandescence. Then came instability. Flame geysers spouting hundreds of thousands of miles into emptiness ceased to keep their formation. They turned north and south from the equatorial line. The outline of the sun became irregular. It ceased to be round in profile, and even the appearance of a ring around it vanished. It looked--though this would never have occurred to Rhadampsicus--very much like a fiercely glowing gigantic potato. Its evolution of heat went up incredibly. It much more than doubled its rate of radiation. Rhadampsicus watched each detail of the flare-up with fascinated attention. Nodalictha dutifully watched with him. But she could not maintain her interest in so purely scientific a phenomenon. When a thin streamer of pure blue-white jetted upward from the sun's pole, attaining a speed of six hundred and ninety-two miles per second, Rhadampsicus turned to her with enthusiasm. "Exactly in the pattern of a flare-up according to Dhokis' theory!" he exclaimed. "I have always thought he was more nearly right than the modernists. Radiation pressure can build up in a closed system such as the interior of a sun. It can equal the gravitational constant. And obviously it would break loose at the pole." Then he saw that Nodalictha's manner was one of distress. He was instantly concerned. "What's the matter, darling?" he asked anxiously. "I didn't mean to neglect you, my precious one!" Nodalictha did something that would have scared a human being out of a year's growth, but was actually the equivalent of an unhappy, stifled sob. "I am a beast!" said Rhadampsicus penitently. "I've kept you here, in boredom, while I enjoyed myself watching this sun do tricks. I'm truly sorry, Nodalictha. We will go on at once. I shouldn't have asked you to--"