If the Patrol fleet did not get there first, the succession of events was different; the degree of difference depending upon how much time the enemy had had. If, as sometimes happened, a fleet was coming through it was met by superatomic bombs and by the concentrated fire of every primary projector that the englobing task force could bring to bear; with consequences upon which it is neither necessary or desirable to dwell. If a planet had emerged, it was met by a negasphere—
Have you ever seen a negasphere strike a planet?
The negasphere is built of negative matter. This material—or, rather, antimaterial—is in every respect the exact opposite of the everyday matter of normal space. Instead of electrons, its ultimate units are positrons—the "Dirac Holes" in an infinity of negative energy. To it a push, however violent, is a pull; a pull is a push. When negative matter strikes positive, then, there is no collision in the usual sense of the word. One electron and one positron neutralize each other and disappear; giving rise to two quanta of extremely hard radiation.
Thus, when the spherical hyper-plane which was the aspect of negasphere tended to occupy the same three-dimensional space in which the loose planet already was, there was no actual collision. Instead, the materials of both simply vanished, along the surface of what should have been a contact, in a gigantically crescendo burst of pure, raw energy. The atoms and the molecules of the planet's substance disappeared; the physically incomprehensible texture of the negasphere's antimass changed into that of normal space. And all circumambient space was flooded with inconceivably lethal radiation; so intensely lethal that any being not adequately shielded from it died before he had time to realize that he was being burned.
Gravitation, of course, was unaffected; and the rapid disappearance of the planet's mass set up unbalanced forces of tremendous magnitude. The hot, dense, pseudoliquid magma tended to erupt as the sphere of nothingness devoured so rapidly the planet's substance, but not a particle of it could move. Instead, it vanished. Mountains fell, crashingly. Oceans poured. Earth-cracks appeared; miles wide, tens of miles deep, hundreds of miles long. The world heaved—shuddered—disintegrated—vanished.
The shock attack upon Arisia itself, which in the Eddorian mind had been mathematically certain to succeed, was over in approximately six minutes. Kinnison, Maitland, and LaForge, fuming at their stations, had done nothing at all. The Boskonians had probably thrown everything they could; the probability was vanishingly small that that particular attack was to be or could be resumed. Nevertheless a host of Kinnison's task forces remained on guard and a detail of Arisians still scanned all nearby space.
"What shall I do next, Kit?" Camilla asked. "Help Connie crack that screen?"
Kit glanced at his youngest sister, who was stretched out flat, every muscle rigidly tense in an extremity of effort.
"No," he decided. "If she can't crack it alone, all four of us couldn't help her much. Besides, I don't believe that she can break through it. That's a mechanical screen, you know, powered by atomic-motored generators. My guess is that it'll have to be solved, not cracked, and the solution will take time. When she comes down off of that peak, Kay, you might tell her so, and both of you start solving it. The rest of us have another job. The moppers-up are coming in force, and there isn't a chance that either we or the Arisians can derive the counter-formula of that screen in less than a week. Therefore the rest of this battle will have to be fought out on conventional lines. We can do the most good, I think, by spotting the Boskonians into the big tank—our scouts aren't locating five per cent of them—for the L2's to pass on to Dad and the rest of the heavy brass so that they can run this battle the way it should be run. You'll do the spotting, Cam, of course; Kat and I will do the pushing. And if you thought that Tregonsee took you for a wild ride—It'll work, don't you think?"