A group of the Jovians walked by, pale and big-eyed, utterly absorbed by their own talk. Zo gestured: “Look at them! They’re so focused. I admire them too, really— throwing themselves so energetically into a project that won’t be completed until long after their death— it’s an absurd gesture, a gesture of defiance and freedom, a divine madness, as if they were sperm wiggling madly toward an unknown goal.”

“That’s all of us,” Ann said. “That’s evolution. When do we go to Miranda?”

5

Around Uranus. four times as far from the sun as Jupiter, objects were struck by one quarter of a percent the light that would have struck them on Earth. This was a problem for powering major terraforming projects, although as Zo found when they entered the Uranian system, it still provided quite enough illumination for visibility; the sunlight was 1,300 times as bright as the full moon on Earth, the sun still a blinding little chip in the black array of stars, and though things in the region were a bit dim and drained of their color, one could see them perfectly well. Thus the great power of the human eye and spirit, functioning well so far from home.

But there were no big moons around Uranus to attract a major terraforming effort; Uranus’s family consisted of fifteen very small moons, none larger than Titania and Oberon at six hundred kilometers in diameter, and most considerably smaller— a collection of little asteroids, really, named after Shakespeare’s women for the most part, all circling the blandest of the gas giants, blue-green Uranus, rolling around with its poles in the plane of the ecliptic, its eleven narrow graphite rings scarcely visible fairy loops. All in all, not a promising system for inhabitation.

Nevertheless people had come, people had settled. This was no surprise to Zo; there were people exploring and starting to build on Triton, on Pluto, on Charon, and if a tenth planet were discovered and an expedition sent out to it, they would no doubt find a tent town already there, its citizens already squabbling with each other, already bristling at any suggestion of outside interference in their affairs. This was life in the diaspora.

• • •

The major tent town in the Uranian system was on Oberon, the biggest and farthest out of the fifteen moons. Zo and Ann and the rest of the travelers from Mars parked in a planetary orbit just outside Oberon, and took a ferry down to the moon to make a brief visit to the main settlement.