detected… short of system wide detectors, which these animals do not have, correct?'
Fixer rippled his fur in agreement.
'No. They detect not the effects of our drives, but the power sources themselves. It is obvious they have discovered magnetic monopoles. I have suspected as much for years, but now plans are taking shape…'
Fixer-Halloran was relieved, and horrified, at once. This was indeed how kzinti ships were tracked, in fact, it was a little slow of the enemy not to have thought of it before. The cultural scientists back on Ceres had been puzzled as well; the kzinti had a science and technology more advanced than the human, but they seemed curiously inept at pure research. Almost as if the knowledge had been pasted onto a prescientific culture…
Every Belter prospector had monopole detection equipment; mining the super-massive particles was a major source of income for individual Belters, and for huge Belt corporations. Known monopole storage centers and power stations were automatically compensated for in even the cheapest detector. In an emergency, a detector could be used to determine position in the Belt or anywhere else in the solar system by triangulation from those known sources. An unknown or kzinti monopole source set detectors off throughout the solar system. And the newly converted propulsion lasers could then be locked onto their target…
'This much is now obvious. It explains our losses. Do you concur?'
'This is a fact,' Fixer said.
'And how do you know it is a fact?' Kfraksha-Admiral challenged.
'The lifeship from War Loot is not powered by monopoles. I survived. Animals would not distinguish monopole sources by the size of the vessel they would attack all sources.'
Kfraksha-Admiral pressed his lips tight together and twitched whiskers with satisfaction. 'Precisely so. We must have patience in our strategies, then. We cannot enter the system using our monopole-powered gravity polarizers. But there is the ghost star… if we enter the system without monopoles, and without approaching the gas-giant planets, where we might be expected… We can enter from an apparently empty region of space, unexpectedly, and destroy the animal populations of many worlds and asteroids. This plan's success is my sinecure. Many females, much territory glory. We are moving outward now to pass around the ghost star and gain momentum.'
Fixer-Halloran again felt a chill. Truly, without the monopoles, the kzinti ships would be difficult to detect.
Fixer pressed his hands together before his chest, a sign of deep respect. Kfraksha-Admiral nodded in condescending fashion.
'You have proven valuable, in your own reluctant, rankless way,' he acknowledged, staring at him with irises reduced to pinpoints in the wide golden eyes. 'You have endured humiliation with surprising fortitude. Some, our more enlightened and patient warriors, might call it courage.' The commander drew a rag soaked in some pale liquid from a bucket behind his bench. He threw it at Fixer, who caught it.
The rag had been soaked in diluted acetic acid vinegar. 'You may remove my mark,'
Kfraksha-Admiral said. 'Henceforth, you have the status of full officer, on my formal staff, and you will be in charge of interpreting the alien technologies we capture. Your combat with Telepath… has been reported to me. It was not strictly honorable, but your forbearance was remarkable. In part, this earns you a position.'
Fixer now had status. He could not relax his vigilance, for he would no longer be under the commander's protection, but he could assume the armor of a true billet; separate quarters, specific duties, a place in the ritual of the kzinti flagship. Presumably the commander would not grant permission for many challenges, and as a direct subordinate he would count as one of the commander's faction, who would retaliate for any unprovoked attack.
The Sons Contend With Bloody Fangs had pulled its way out of the sun's gravity well at a prodigious four- tenths of the speed of light, faster than was safe within a planetary system, and was racing for the ghost star a hundred billion kilometers from the sun. Sol was now an anonymous point of light in the vastness of the Sagittarius arm of the galaxy; the outer limits of the solar system were almost as far behind.
The commander's plans for the whiplash trip around the ghost star were secret to all but a few. Fixer was still not even certain what the ghost star was it was not listed under that name in the libraries, and there was obviously a concept he was not connecting with. But it was fairly easy to calculate that to accomplish the orbital maneuvers the commander proposed, the ghost star would have to be of at least one-half solar mass. Nothing that size had ever been detected from Earth; it was therefore dark and absolutely cold. There would be no perturbed orbits to give it away; its distance was too great.
So for the time being, Fixer assumed they were approaching a rendezvous with either a dark, dead hulk of a star, or perhaps a black hole.
A hundred billion kilometers was still close to the solar neighborhood, as far as interstellar distances were concerned. That kzinti knew more about these regions than humans worried the sublimated Halloran. What other advantages would they gain?
The time had come for Halloran to examine what he had found. With his personality split in half, and locked into a kzin mentality, he might easily overlook something crucial to his mission.
In his quarters, with the door securely bolted, Halloran came to the surface. Seven days in the kzinti flagship had taken a terrible toll on him; in a small mirror, he saw himself almost cadaverous, his face deeply lined. Kzinti did not use water to groom themselves, and there were no taps in his private quarters the aliens were descended from a pack-hunting desert carnivore, and had efficient metabolisms so his skin and clothing would remain dirty. He took a medicinal towelette, used to treat minor scratches received during combats, and wiped as much of his face and hands clean as he could. The astringent solution in the towelette served to sharpen his wits. After so long in Fixer's charge, there seemed little brilliance and fire left in Halloran himself.
And Fixer is just not very bright, he thought sourly. Think, monkey, think!
He looked old.
'Bleep that,' he murmured, and picked up the library pack. As Fixer, he had subliminally marked interesting passages in the kzinti records. Now he set out to learn what the ghost star was, and what he might expect in the next few hours, as they approached and parabolically orbited. A half-hour of inquiry, his eyes reddening under the strain of reading the kzinti script without Fixer's intercession, brought no substantial progress.
'Ghost,' he muttered. 'Specter. Spirit. Ancestors. A star known to ancestors? Not likely they would have come on into the solar system and destroyed or enslaved us centuries ago… what the tanj is a ghost star?'
He queried the library on all concepts incorporating the words ghost, specter, ancestor, and other synonyms in the Hero's Tongue. Another half-hour of concentrated and fruitless study, and he was ready to give up, when the projector displayed an entry. Specter Mass.
He cued the entry. A flagged warning came up; the symbol for shame-and-disgrace, a Patriarchal equivalent of Most Secret.
Fixer recoiled; Halloran had to intervene instantly to stop his hand before it halted the search. Curiosity was not a powerful drive for a kzin, and shame was a very effective deterrent.
A basic definition flashed up. 'That mass created during the first instants of the universe, separated from kzinti space-time and detectable only by weak gravitational interaction. No light or other communication possible between the domain of specter mass and kzinti space-time. '
Halloran grinned for the first time in seven days.
Now he had it he could feel the solution coming. He cued more detail.
'Stellar masses of specter matter have been detected, but are rare. None has been found in living memory. These masses, in the specter domain, must be enormous, on the order of hundreds of masses of the sun' the star of Kzin, more massive and a little cooler than Sol 'for their gravitational influence is on the order of. 6 [base 8] Kzin suns. The physics of the specter domain must differ widely from our own. Legends warn against searching for ghost stars, though details are lost or forbidden by the Patriarchy.'
Not a black hole or a dark star, but a star in a counter-universe. Human physicists had discovered the possible existence of shadow mass in the late twentieth century Halloran remembered that much from his physics classes. The enormously powerful superstring theory of particles implied shadow mass pretty much as the kzinti entry described it. None had been detected…
Who would have thought the Earth was so near to a ghost star?
And now, Kfraksha-Admiral was recommending what the kzinti had heretofore forbidden close approach to a ghost star to gain a gravitational advantage. The kzinti ships would appear, to human monopole detectors, to be leaving the system retreating, although slowly. Then the fleet would decelerate and discard its monopoles, sending
