Now, driving in past great circle after circle of flaming suns, past the countless planets that moved inside those circles, we were flashing on with the ships about us toward the center of this strange and mighty universe. On our space-chart I could see that thick about us were great masses of interstellar traffic, which cleared away before us as we drove inward. Circle after circle of fiery suns we were leaving behind, mass upon mass of swarming planets inside, but never on our space-charts showed any wandering dark-stars, or meteor-swarms, or vagabond, sunless worlds, all matter in this universe apparently having been swept up by the Andromedans and used as habitations for their races, inside the great sun-circles. A gigantic mass of perfectly grouped stars they stretched about us, those sun-circles, filling the heavens about us; but now, far ahead, there shone out ever more brilliant at the center of this great universe another great circle of suns, that seemed the largest in all this universe. A score of titanic, flaming stars, they hung there at this galaxy's center, and it was toward these that our racing ships were heading. Toward them we gazed with intense interest as our ships fled on, but suddenly were startled back to realization of our immediate surroundings by a great rumbling and grating from beneath, our ship swaying to one side and heeling sickeningly over, even as it flashed ahead. In sudden tense silence we stood, listening to that rumbling and cracking beneath, and then up from the speech-tube beside me there came a startled cry from one of our crew below. "The ship's splitting!" he cried. "The walls have been grating and giving ever since we ran through that radio-active disintegrating-region--and now the ship's beginning to break in two!" There was an instant of silence in the pilot room, the only sound that fearful grating rumble from beneath as gradually the ship's walls, weakened and crumbled by the disintegrating vibrations of the radio-active region through which we had plunged, began at last to split. A moment more, we knew, would see our ship riven apart there in space, with instant annihilation the fate of all of us. Silent, stunned, for a moment we stood there, the Andromedans beside us comprehending the situation as well as ourselves; then I whirled around to Korus Kan, flung my arm up toward the great central sun-circle that lay now full ahead, nearest of all the sun-groups to our onward-racing ships. "Full speed!" I cried to him. "There's a chance still that we can get to those suns and worlds before the ship breaks up!"