Coyote snorted. “There’s no surprising you, is there boy! Well, I’ll tell you something you didn’t know; that was ice asteroid 2089 C, and did you see how it blew up there at the end? That was a first. They did that on purpose. Blowing them up when they enter the atmosphere allows them to use bigger asteroids without endangering the surface. And that was my idea! I told them to do that myself, I put an anonymous suggestion in the AI at Greg’s Place when I was in there messing with their comm system, and they jumped on it. They’re going to do them that way all the time now. There’ll be one or two every season like that, they’re thickening the atmosphere pretty fast. Look at how the stars are trembling. They used to do that all the nights of Earth. Ah, boy . . . It’ll happen here all the time too, someday. Air you can breathe like a bird in the sky. Maybe that will help us to change the order of things on this world. You can never tell about things like that.”

Nirgal closed his eyes, and saw red afterimages of the ice meteor score his eyelids. Meteors like white fireworks, holes boring straight into the mantle, volcanoes. . . . He turned and saw the Coyote hopping over the plain, small and thin, his helmet strangely large on him as if he were a mutant or a shaman wearing a sacred animal head, doing a changeling dance over the sand. This was the Coyote, no doubt about it. His father!

• • •

Then they had circumnavigated the world, albeit high in the southern hemisphere. The polar cap rose over the horizon and grew, until they were under the overhang of ice, which did not seem as tall as it had at the start of the journey. They circled the ice to home, and drove into the hangar, and got out of the little boulder car that had become so well known to Nirgal in the previous two weeks, and walked stiffly through the locks and back down the long tunnel into the dome, and suddenly they were among all the familiar faces, being hugged and cosseted and questioned. Nirgal shrank shyly from the attention, but there was no need, Coyote told all their stories for him, and he only had to laugh, and deny responsibility for what they had done. Glancing past his kin, he saw how small his little world really was; the dome was less than 5 kilometers across, and 250 meters high out over the lake. A small world.