Even though Wilson was expecting it, the end of the planetary gravity field came as a shock. One foot was pressed firmly on the ground, while the one in front seemed to waver in midair. Wilson concentrated on pulling himself forward, using the handholds between the electromuscle bands. Every sense immediately told him he was falling. His hands automatically tightened their grip. In front of him, Nigel’s body had already swung around parallel to the gateway. He started to pull himself along the support gantry handholds, heading in toward the ship. Wilson copied him, using the handholds like a ladder for the first few meters, then his body simply glided along twenty centimeters or so above the gantry. He remembered to grip a handhold every few meters, just to correct his direction and prevent any spin from building up. His stomach was quivering at the falling sensation, but apart from a wet belch, he didn’t feel any dramatic onset of sickness. The air around him carried a distinct tang of welded metal and warm oil, though the smell slowly weakened as fluids began to pool in his head.

“Tell you something,” Nigel called back over his shoulder. “I get one hell of a buzz out of seeing this baby. Big projects always do that to me. But, man, I ain’t been this excited about a chunk of engineering since Ozzie and I put the original wormhole gateway together.”

“I remember the day,” Wilson said dryly. He couldn’t escape from his memories of the Ulysses that day either, the last time he’d ever seen the proud interplanetary ship, a big mass of struts with hardware attached at all points. None too dissimilar to this craft.

Nigel chuckled. “We’re coming up on the reaction drive section.”

The maze of girders wasn’t getting any clearer as they approached. Wilson asked his e-butler to access the assembly platform array. It overlaid a blueprint of what he was seeing on his virtual vision. The starship’s design was quite simple. The life-support section housing the crew was a thick ring three hundred meters in diameter, which would rotate to provide a twenty percent gravity field along its rim. A basic VonBraun wheel, Wilson thought, though no one would ever call it that nowadays. In the middle of that was a cylinder four hundred meters long and a hundred fifty in diameter, containing both the FTL drive and the plasma rockets. The surface had a multitude of bulges and prominences, as if it were growing metallic tumors.

The three of them floated around a fat nozzle with a perfect mirror-surface interior. It was the first of the five plasma rockets to be installed, leaving rosettes of struts where the other four would be fitted. Wilson studied the thick reaction mass fuel pipes and superconductor cabling that would be connected into the other units when they arrived. His hand crept out of its own accord to touch the casing of the installed nozzle.

Plasma rockets. Just like the old Ulysses had. It’s like a bicycle, some things you can’t improve.

“What kind of power source are we using?” he asked.

“Niling d-sinks,” Nigel told him. “Fifteen of the goddamn biggest we make. There are backups, as well, of course; we’re providing microfission piles and two fusion generators. But the niling d-sinks are your primary supply. They’ll give you enough power to fly seven thousand light-years.”

“That far?” Somehow Wilson had been expecting the ship to be capable of reaching Dyson Alpha and returning, nothing more.

“Yeah, but that doesn’t mean you’ve got a license to fly off and explore the rest of the galaxy, Captain, okay?”

Wilson smiled with a faint degree of guilt. He’d been thinking just that. “You know what you’re doing, don’t you? What this ship is?”

“What?”

“You’re dropping a pebble off the top of a mountain. When it gets to the bottom it’ll be an avalanche. People are going to be interested in exploring the unknown again. They’ll want more ships like this, they’ll want to know what else is out there. The next ship will be big enough to fly around the galactic core.”

“Wrong, Captain. Only people like you want to do that, born romantics. And there aren’t as many of you as you’d like to think. This Commonwealth we’ve built for ourselves is a mature, conservative society. We’ve grown up a lot in the last couple of centuries. Only people with one short life want to go tearing out into the great unknown with nothing more than a flashlight and a stick to poke the rattlers with. The rest of us will take our time and expand slowly, that way there are no mistakes made. Tortoise and the hare, Captain, tortoise and the hare.”

“Maybe,” Wilson said. “But I don’t believe we’re as civilized as you like to think, not all of us.” They’d gone past the reaction drive sector of the ship, and were in the midsection, where two stumpy arms linked the habitation ring to the central engineering section superstructure. Again there wasn’t much to see, just the raw skeleton devoid of any hull plating, even the internal decking was missing inside the stress structure. Although a lot of auxiliary machinery had already been installed. “How’s the hyperdrive coming along?”

The lines around Sheldon’s mouth tightened slightly. “The flow wormhole generator is undergoing stage three component testing. They should begin primary installation in three to four months.”

“So how does that leave our overall timetable?” Wilson asked.

“Our initial projection has completion in another seven months,” Daniel Alster said. “However, there were several problems associated with zero-gee construction which we hadn’t factored in.”

“Be more like nine months now,” Nigel grunted.

“Everything costs more,” Wilson pronounced happily.

“And takes longer,” Nigel completed. “Tell me about it.”

“How come you didn’t build this at the High Angel?” Wilson asked. “I know it would add another two hundred and thirty light-years to the trip, but that’s not much to this ship if I read the specs right. And they have all the astroengineering expertise there.”

“Political control,” Nigel said simply. “Specifically: mine. This way, CST remains the primary operator for the whole mission.”

“Fair enough,” Wilson said. It was a reasonable compliment that Nigel didn’t feel the need to guard what he said.

Near the front of the superstructure a great nest of power cables waited for whatever unit was to be installed there. Intrigued by the power levels involved, Wilson checked the section against his virtual vision blueprint to find it was a force field generator, one of seven. “It’s well defended.”

“I want you back in one piece,” Nigel said. “And I still worry about the envelopment being a defensive action. To me it’s the most likely scenario.”

“If we’re up against weapons that you need to protect a star against, I don’t think a couple of our force fields will be much use.”

The three of them stopped drifting, and clustered together around a force field generator emplacement. “Look,” Nigel said. “One of the reasons I wanted you to see this today was so you could get a decent overview. At this stage the design is still reasonably flexible. Hell, we can put the launch schedule back by a year if we need to. I want your input on this.”

“Fine. My initial response is that we should be a lot more cautious than the flight profiles you’ve shown me so far. The last thing we want is a mission where we come out of hyperspace right next to the envelopment barrier and start yelling: Anyone here? We need to be taking our first look from at least ten light-years out, which means the very best sensor systems the Commonwealth can build. If we can’t detect any signs of conflict from there, then we move in by stages. That will probably mean adding several months to the mission.”

“I can live with that,” Nigel said.

“Good, because I will only take this ship out if we’re running with a safety-is-paramount philosophy. Not just for the crew, but for humans everywhere. If there is something hostile out there, I don’t want to draw its attention to us. I hope you appreciate just how much responsibility is accruing around this project.”