closed cosmic string, a tiny relic of the rapidly cooling early universe, had been tugged out of the seething foam of the quantum vacuum. The string was barely a scratch compared with the largest cosmic flaws, but it would suffice for the singer’s purposes. It was tugged and elongated like a loop of toffee, inflated with the same vacuum phase energy that the singer tapped for all its needs, until it had macroscopic size and macroscopic mass-energy density. Then the string was deftly knotted into a figure-of-eight configuration and plucked, generating a narrow cone of throbbing gravitational waves.The oscillations increased in amplitude, slowly but surely. At the same time, chirping gravitational pulses with precision and elegance, the singer sculpted the patterns themselves, causing new vibrational modes to spring into play, enhancing some and suppressing others. The star’s rotation had already destroyed any spherical symmetry in the original oscillation modes, but the modes had still been symmetric with respect to the star’s axis of spin. Yet now the singer worked to instil more profoundly asymmetric modes in the star, focusing its efforts on a single equatorial point immediately between the singer and the star’s centre of mass. It increased its power and focus, the closed cosmic string oscillating even more vigorously. Immediately below the singer, on the outer envelope of the star, mass flows were pinched and reflected, heating and compressing surface hydrogen to near-fusion conditions. Fusion did indeed erupt in three or, four concentric rings of stellar matter, but that was incidental. What mattered, what the singer intended, was that the star’s spherical envelope should begin to pucker and distort. Something like a navel was appearing in the star’s seething hot surface, an inward dimple wide enough to swallow a whole rocky world. Concentric rings of fusion, circles of searing brightness, spread out from the dimple, squalling X-rays and neutrinos into space. Still the singer continued pulsing the star with gravitational energy, the timing surgically acute, and still the dimple sank deeper, as if an invisible finger were pushing against the pliant skin of a balloon. Around the dimple the star was bulging higher into space as matter was redistributed. The matter had to go somewhere, for the singer was excavating a hole deep into the star’s interior.It would continue until it had reached the star’s nuclear-burning core.
*
It was a fifteen-hour trip from Resurgam orbit to Nostalgia for Infinity and Khouri spent every minute of it in a state of extreme apprehension. It was not simply the strange and worrying thing that had started to happen to Delta Pavonis, although that was certainly a significant part of it. She had seen the Inhibitor weapon start its work, pointing like a great flared bugle at the surface of the star, and she had seen the star respond by growing a furious hot eye on its surface. Magnification showed the eye to be a zone of fusion, several zones, in fact, which surrounded a deepening pit in the star’s envelope. It was in the face of the star that was turned towards Resurgam, which did not seem likely to be accidental. And whatever the weapon was doing, it was doing it with astonishing speed. The weapon had taken so long to reach readiness that Khouri had mistakenly assumed that the final destruction of Delta Pavonis would take place on the same leisurely timescale. This was clearly not going to be the case. She would have been better thinking of an elaborate build-up to an execution, with many legal hurdles and delays, but which would conclude in a single bullet shot or killing surge of electrical current. That was how it was going to be with the star: a long, grave preparation followed by an extremely swift execution.And they had still evacuated only two thousand people — in fact, it was far worse: they had transported two thousand people from the surface of Resurgam, but none of those had yet seen Nostalgia for Infinity , or had any idea of what they were going to find when they stepped aboard it. Khouri hoped that none of her nervousness was apparent, since the passengers were volatile enough already.It was not simply the fact that the transfer craft was designed to take far fewer occupants, and so they were forced to endure the journey in cramped, prisonlike conditions, with the environmental systems strained to the limit just to provide sufficient air, water and refrigeration. These people were taking a tremendous risk, putting their faith in forces utterly beyond their control. The only thing holding them together was Thorn, and even Thorn appeared on the edge of nervous exhaustion. There were constant squabbles and minor crises breaking out all over the ship, and whenever they happened Thorn was there, soothing and reassuring, only to dash off somewhere else as soon as the trouble had been allayed. His charisma was being stretched butter-thin. He had not only been awake for the entire trip, but also for the day before the lift-off of the final shuttle flight and the six hours it had taken to find places for the five hundred new arrivals.It was taking too long; Khouri could see that. There would have to be another ninety-nine flights like this before the evacuation operation was done, ninety-nine further opportunities for all hell to break loose. It might get easier once word got back to Resurgam that there was a star ship at the end of the journey, rather than some diabolical government trap. On the other hand, when the precise nature of the starship became clearer things might get an awful lot worse. And there was every likelihood that the weapon would soon finish whatever it had initiated around Delta Pavonis. When that happened, every other problem would suddenly look very slight indeed.But at least they were nearly home and dry with this trip.The transfer ship was not designed for transatmospheric flight. She was a graceless sphere with a cluster of motors at one pole and the dimple of a flight deck at the other. The first five hundred passengers had spent many days aboard, exploring every grubby cranny of her austere interior. But at least they had had some room to spare. When the next load came up, things became a little more difficult. Food and water had to be rationed and each passenger assigned a specific cubbyhole. But it was still tolerable. Children had still been able to run around and make nuisances of themselves, and adults had still been able to find a little privacy when they needed it. Then the next shipment had come up — another five hundred — and the whole tone of the ship had changed subtly, and for the worse. Rules had to be enforced rather than politely suggested. Something very close to a miniature police state had been created aboard the ship, with a harsh scale of penalties for various crimes. So far there had been only minor infringements of the draconian new laws, but Khouri doubted that every trip would run as smoothly. Sooner or later she would probably be required to make an example of someone, for the benefit of the others.The final five hundred had been the greatest headache. Slotting them in had resembled a fiendish puzzle: no matter how many permutations they tried, there were always fifty people still waiting on the shuttle, glumly aware that they had been reduced to irksome surplus units in a problem that would have been a great deal more tractable had they not existed.And yet, finally, a way had been found to get everyone aboard. That part at least would be simpler next time, but the rule of discipline might have to be even stricter. The people could be allowed no rights aboard the transfer craft.Thirteen hours out, a kind of exhausted calm fell across the ship. She met Thorn by a porthole, just out of earshot of the nearest huddle of passengers. Ashen light made his face statuelike. He looked utterly dejected, sapped of any joy in what they had achieved.‘We’ve done it,’ she said. ‘No matter what happens now, we’ve saved two thousand lives.’‘Have we?’ he asked, keeping his voice low.‘They’re not going back to Resurgam, Thorn.’They spoke like business associates, avoiding physical contact. Thorn was still a ‘guest’ of the government and there must not appear to be any ulterior motive behind his co-operation. Because of that necessary distance, an act that had to be maintained at all times aboard the shuttle, she felt the urge to sleep with him more strongly than she had ever done before. She knew that they had come very close aboard the ship after the encounter with the Inhibitor cubes in Roc’s atmosphere. But they had not done it then, and nor had they when they were on Resurgam. The erotic tension that had existed between them ever since had been thrilling and painful at the same time. Her attraction to him had never been stronger, and she knew that he wanted her at least as much. It would happen, she knew. It was just a question of accepting