The moment of swift, terrific battle that followed was to me then only a wild uproar of flashing action and hoarse shouts, as the mighty ships beneath leapt up toward us. It was only another sudden twisting turn of our ship by Korus Kan that saved us from annihilation in that wild first moment of combat, since the score or more of pale, deadly beams from beneath, stabbing past us as we twisted, struck the ships of our squadron behind and in another moment had sent half of them reeling blindly and aimlessly out of sight, driving haphazardly off into space as the ghostly beams annihilated all the life inside them. Then, as we raced still through space above the mighty swarm, the score of attacking ships suddenly divided, a dozen of them driving up toward the ships behind us while the remainder flashed toward us, their great, pale rays still stabbing and slicing as they leapt on.

Even as our ship swerved from the pale beams leaping up toward us, though, I had shouted an order into the tube beside me, and now from our own craft there stabbed down toward the upward-rushing ships a half-dozen long, narrow rays of brilliant red light. Four of the ships below were struck squarely by those brilliant rays, and from our crew came shouts of triumph as those four vanished in blinding flares of crimson light. It was the deadly ray of the Interstellar Patrol, destroying all matter it touched by raising its frequency of vibration, since matter itself is but a certain frequency vibration of the ether, and when that frequency is raised to that of light-vibrations the matter is changed in that moment from solid matter to light.

Even in the moment that the four ships vanished beneath our rays, though, I had glanced backward and had seen the last of the ships of our squadron behind vanishing in a wild chaos of whirling death-beam and crimson ray, since scores of other ships were leaping up to attack us from the mighty swarm far beneath. Toward us now, it seemed, ships were flashing from every direction, and I heard the hissing of the ray-tubes below as our crimson rays burned out to meet them, saw three more of them flare and vanish, glimpsed a dozen shafts of the death-beam graze past us as Korus Kan twisted our ship in an erratic, corkscrew course. Not for moments longer, though, I knew, could we keep up this wild and unequal battle, since the mass of ships behind that had annihilated our squadron were now leaping after us. Our only chance was in flight.

I shouted to Korus Kan, and then, as scores of the ghostly beams swept through the void toward us, I saw him swerve the control-levers in his hands sharply sidewise, so that our ship abruptly turned squarely to the right, away from the great swarm and the attacking ships about us. It was a maneuver that caught those ships off their guard, and traveling as we were at the terrific velocity of five hundred light-speeds, it put millions of miles of space between us and the great swarm before the attacking ships could realize what we had done. In a split-second they had vanished from sight about us and we were again rushing on through black and empty space, turning now, and again heading toward the galaxy's far-flung suns. But, as I gazed anxiously at the big space-chart, I saw that now the great swarm of black dots upon it had slanted from their former course and was heading straight after the single dot that was our ship. By means of their own space-charts, which I knew they must have, they had discovered our trick and were in pursuit.

"Let her out to full speed," I cried to Korus Kan. "They're after us and our only chance is to get to the galaxy ahead of them."

Instantly Korus Kan opened wide the power-controls, and with a mounting humming roar our great ship went rapidly into its highest speed, its great generators flinging it on through the ether at a thousand times the velocity of light, propelling it headlong onward toward the galaxy that lay still far ahead, its mighty disk-like mass of shining suns stretched across the blackness of space before us. And behind us rushed the great swarm, too, racing on after us and toward the galaxy still. I knew that the speed of that mighty swarm of ships must be inconceivably greater than that of our own, since we ourselves had seen them on our charts racing in toward the galaxy from outer space with velocity unthinkable, a velocity which we had thought could only be due to some great ether-current, and which they had only slackened as they drew near the galaxy. There was a slender chance, though, that we might yet escape, and now as we rushed on toward the galaxy in headlong flight I turned quickly to the speech-projection instrument beside me, pressing a button in its base. A moment later there came from it a clear, twanging voice.

"General Patrol Headquarters at Canopus," it announced, and swiftly I responded.

"Dur Nal, Captain of Patrol Squadron 598-77, speaking," I said. "I desire to report the discovery of a swarm of some five thousand strange space-ships which have appeared out of intergalactic space, heading toward the galaxy. These ships are apparently capable of immense speeds and are armed with a form of death-beam unfamiliar to us, but extremely deadly in operation. On discovering these ships we were attacked by them and all of my squadron except my own ship destroyed. Our own ship is now being chased inward toward the galaxy, heading in the general direction of the Cancer cluster, and though the swarm is gradually overhauling us we may be able to escape. From the size, number and deadly armament of these alien ships it is apparent that they contemplate a general attack upon our universe."

There was a moment's pause when I had finished, and then from the speech-instrument there came the metallic voice again, as calm as though I had made only a routine report of position and progress.

"Order of Lacq Larus, Chief of the Interstellar Patrol, to Dur Nal. You will make every effort to elude the pursuing swarm, and if you can do so will endeavor to draw it into the Cancer cluster. All the cruisers of the Interstellar Patrol will be assembled inside the cluster as swiftly as possible, and if you are successful in drawing the pursuing swarm inside it will be possible for our fleet to fall upon it in an unexpected attack, and destroy these invaders, whatever their source or purpose, before they can obtain a foothold in the galaxy. You have the order?"

"I have the order," I replied, as calmly as possible, and with a word of acknowledgment the twanging voice ceased.

I wheeled around to Korus Kan and Jhul Din, a flame of excitement leaping within me. "It's a chance to destroy them all." I exclaimed. "If we can hold out until we reach the galaxy-can lead them into that cluster-"

Their own eyes were afire now as they saw the chance, and now Korus Kan tightened his grasp on the controls, gazing grimly ahead with power open to the last notch, while Jhul Din strode swiftly out of the pilot room and down to the ship's hull beneath, where, in a moment more, I heard his deep voice booming out orders to the crew as they labored to wring from our throbbing generators the last ounce of speed. Yet now, too, looking up at the big space-chart, I saw that the gap on it between our single little ship-dot and the great swarm of dots behind was terrifyingly small, a gap of less than a half-inch which represented no more than a few billion miles of space. And slowly, steadily, that gap was closing, as the great swarm slowly overhauled us. With their immense potential speed they could have flashed past us in a moment, had they so desired, yet I knew too that they dared not use such terrific speed so near the galaxy, and that even did they use it we would be able to turn and double before they could slow down enough to catch us. Their plan, it was obvious, was simply to overhaul us slowly until they had just reached us, and then sweep down on us with the death-beams while we strove in vain to escape them.

So at our utmost speed we flashed on through the void toward the galaxy, a mighty belt of burning suns across the blackness before us, and toward the close-massed cluster of suns at its edge that shone among the scattered stars around it like a solid ball of light, while there rushed after us through space at the same mighty speed the great swarm of strange craft which we were attempting to lead into that cluster.

* * *

Surely in all time was never so strange a flight, a pursuit, as this one-a flight inward through the void with unimaginable beings from the mysteries of infinite outer space as our pursuers, flashing on in thousands on our track, toward us and toward the galaxy they meant to attack.

Far ahead in that galaxy, too, I knew, its forces would be preparing to meet that attack, and from the central sun of Canopus the alarm would be flashing out across our universe from star to star, from world to whirling world, flashing in warning from end to end of the galaxy, to all the stars and worlds and races of the Federated Suns. And even while that warning flashed, the great star-cruisers of the Interstellar Patrol would be gathering in answer, would be rushing headlong between the suns across the galaxy from every quarter of it to mass in force inside the Cancer cluster. Could we escape the pursuing swarm and lead it into that cluster it would still be hours, I knew, before we reached it, even at our tremendous speed, and in those hours all the fighting-ships of the galaxy would be racing toward the rendezvous there and massing to meet this mighty invading fleet.

Could we escape? The thought beat monotonously through my brain as I stood there with Korus Kan, silent as the Antarian as we watched the great swarm of dots creep closer and closer to us on the space-chart. On and on our ship was racing, the throbbing generators now making the whole ship vibrate with their vast power, and visibly the galaxy's shining suns were largening ahead as we flashed on toward them; yet as the minutes passed, forming into an hour, and then another, the great swarm behind crept ever remorselessly closer. Rocking and swaying as we plunged through great ether-currents, we held still straight toward the Cancer cluster, at the galaxy's edge ahead; yet still we had covered no more than two-thirds of the distance that had separated us from it, and now the great swarm was no more than a few million miles behind, a mere fraction of an inch on the space-chart.

It was as though our pursuers were but playing with us, so calmly and steadily did they overtake us, and in despair I turned from the galaxy's mighty rampart of stars, ahead, to the rear distance-windows. A moment more, I knew, and the thousands of ships behind would be drawing into sight in those windows, would be speeding down upon us even as we sought to flee and would annihilate us with an attack which we could not hope to escape a second time. Hopelessly I gazed back into the blackness of space behind, but then wheeled back suddenly as there came a sudden exclamation from Korus Kan. He had swerved our flying ship's course a little and was pointing up toward the space-chart now, his strange eyes agleam with excitement.

"If we can make it, it's a chance to throw them off our track," he exclaimed, and as I gazed up toward the space-chart I suddenly understood.

On that chart our single ship-dot was rushing on toward the glowing circles of the galaxy's suns, with the mighty swarm of black dots that were our pursuers close behind, and now I saw that a little ahead of our own ship-dot there hung stationary on the chart another dot, one not of black but of red. Instantly I recognized it as one of the great Space-buoys hung in space to mark the positions of the mighty ether-maelstroms which were the most perilous of all the menaces to interstellar navigation. Formed by the meeting of vast ether-currents, these maelstroms had been marked for all space-navigators by placing near each a special spaceship, or buoy, which automatically and without crew kept its position, showing as a red dot on all space-charts to warn passing ships of the maelstrom's position. The great maelstrom ahead, I knew, was one of the mightiest of all in and around our galaxy, and now as our ship sped straight through space toward it I saw Korus Kan's plan and caught my breath with sudden hope.

"We'll head straight toward the maelstrom, and then swerve aside just before we reach it," he was saying. "The swarm behind can have no knowledge of its existence, and if they run into it before they can change their course it'll delay them, at least."

Tensely I watched now as our ship raced on, the humming roar of its generators rising a half-pitch still higher as Jhul Din, beneath, drove the crew to their last strength to win another light-speed. A scant few million miles ahead the great maelstrom lay, marked only by the red dot on the chart, and as we sped straight on toward that dot our ship already was rocking and bucking as we drove through the mighty ether-currents whose meeting formed the maelstrom. Braced against the room's wall we stood, eyes straining ahead through the darkness and against the glare of the galaxy's suns in the distance, and then, as I turned to glance back, I saw that behind us now there gleamed in the blackness points of shining light, points that were swiftly largening and nearing us, countless in number and driving through space straight on our track. With each fleeting moment they were flashing nearer toward us, and now were so near that through the distance-window I could plainly make out their white-lit pilot rooms as they drove after us. A moment more, I knew, would see them close enough to loose the death-beams upon us, but at that moment there was a half-breathed exclamation from Korus Kan, and I turned swiftly about.

He was gripping the controls tensely, gazing forward into the blackness that lay between us and the galaxy, and even as I turned I saw that our ship-dot had flashed past the red danger-dot on the space-chart. Instantly then Korus Kan twisted the controls sharply to the left, and immediately our craft was flashing off in a great curve from the path it had been following, veering suddenly toward the left while the great swarm just behind us raced still for the moment straight ahead. Then, before they could swerve aside to follow us, I had a single flashing glimpse through the window of the whole mighty swarm suddenly disintegrating, shattering, the thousands of ships that made it up suddenly whirling away in all directions in blind chaos of aimless movement as they rushed straight into the mighty ether-maelstrom into which we had led them. Then they had vanished, whirling blindly about, as we flashed on out of sight, our own craft swaying wildly as we drove on through the great currents about the maelstrom. On the space-chart, though, I saw the great swarm's pursuit for the moment had ceased, the myriad dots that made it up milling aimlessly about in the mighty maelstrom's grip while our single ship-dot raced straight on.

"A chance," I cried, as our ship flashed on toward the galaxy's suns. "A chance yet-if we can get to the Cancer cluster before them!"

* * *

Now our cruiser was again flashing on at its very highest speed, straight toward that cluster, while behind us the great swarm whirled chaotically about. Before us the galaxy's suns were burning out in waxing splendor as we shot through space toward them, the cluster of closer-packed suns that was our goal changing now from a ball of solid light into a ball-like mass of thronging, flaming stars as we drew nearer it. But as Jhul Din came back into the pilot room from beneath, as we three contemplated the space-chart and then the great wall of suns in the blackness ahead, our faces set again after our brief triumph, for we knew that billions of miles of space lay still between us and those suns. And now, too, we saw on the chart that the great swarm of ships behind had escaped from the maelstrom's grip at last and was racing after us once more in swift pursuit, a hundred of their ships in the van now of that pursuit with the main body of the swarm behind.

"It's the last stretch!" I exclaimed, as we gazed tensely at the chart and into the void ahead. "Unless we get to the Cancer cluster ahead of them now it's the end."

Our ship was leaping forward still at its uttermost speed, its strained generators functioning nobly, but the great swarm behind was again picking up speed itself, the hundred ships massed together a few million miles ahead of the main swarm hardly more than an inch behind our own ship-dot on the space-chart. On-on-straight toward the fiery mass of the Cancer cluster we fled, while behind us, in cruel repetition of the first part of this wild chase the pursuing ships slowly cut down the gap between us, the hundred foremost ones leaping every moment closer toward us, while behind them the main swarm came on more deliberately. Ahead now the galaxy filled the heavens before us, myriads of burning stars that gemmed the infinite night with their flaming brilliance, but of all in the stupendous scene around and before us we had eyes only for the thronging suns of the Cancer cluster, and for the space-chart above us.

On-on-the minutes of that mad onward flight were passing each like an eternity as we leapt forward, tensely braced there in the pilot room, peering forward, with behind us the hundred pursuing ships close on our track, remorselessly overtaking us, with behind them the great swarm of thousands of ships that were driving to attack our universe. Ahead of us, I knew, there somewhere in the flaming cluster of suns before us, the cruisers of the great Interstellar Patrol, the warships of our universe, would be gathering and massing to meet that great invading fleet, but unless we could escape and lead it into the cluster where they waited they would have no chance for a surprise attack. Before us by now the great cluster lay in waxing, flaming splendor, only a scant few billion miles ahead, its thronging, gathered suns burning out in supreme glory amid the galaxy's looser-swarming suns, but now the hundred foremost ships of the mighty swarm behind were almost upon us.

Even as I turned, now, toward the distance-window behind me, I heard a deep exclamation from Jhul Din, who had turned to gaze back also, and as I too gazed through that window a chill seemed to creep through my very blood, for light-points were showing there in the blackness behind, and drawing swiftly nearer. It was the hundred foremost ships! Ever closer they were racing toward us, overtaking us again with every moment, while far behind them the main swarm raced on after them. With each passing moment the light-points behind were broadening, brightening, as the ships came closer, but now the great cluster ahead loomed full before us, its myriads of flaming, thundering suns drenching all in our pilot room in their fierce, terrific glare. Straight ahead of us, at the mighty cluster's outmost edge, flamed a great double star among all the other thronging stars that made it up, two giant white suns separated only by a comparatively narrow gap. And straight toward that narrow gap our fleeing ship was heading.

Behind us now the hundred long oval ships were drawing into plain sight, their white-lit pilot rooms giving us brief glimpses inside of massed machinery and slender beings we could but half-glimpse that moved inside. From the foremost of those ships, now, there stabbed out toward us the broad, pale, ghostly beam of death, but as yet the gap between us was too wide for the beam to bridge, and we flashed onward still, the gleaming shapes of our pursuers leaping still closer. Before us now the whole firmament seemed a wild chaos of gigantic suns, as we raced straight in toward the mighty cluster, with ahead the narrow gap that separated the two giant white suns toward which we were heading.

Jhul Din gripped my shoulder, pointed ahead, shouted to me over the roar of our generators. "Unless we slacken speed we'll never make it through that gap without driving into one of the suns," he cried.

I shook my head. "It's death either way!" I yelled to him. "Our only chance is to drive between them at full speed."

Now before us the whole heavens seemed a single vast sheet of boiling white flame as we drove in toward the two mighty thundering suns, the gaps between them seeming no more than a narrow black cleft at the terrific velocity at which we were moving. At our topmost speed we rushed toward that narrow gap, the ships behind still leaping full upon our track, closing swiftly down upon us now. And now, as Korus Kan braced himself and held our controls still steady, we were flashing squarely in between the two gigantic suns. On either side of us they towered, thundering, boiling upright oceans of devouring, brilliant white flame, whose awful glare all but blinded us, seeming to fill all the universe about us with one great mass of raging fires. Out toward our onward-flashing ship there licked from the great suns on either side titanic tongues of flame bursting out toward us for millions of miles, huge prominences that could have licked up worlds like midges, but straight on between the walling fires our throbbing ship still flashed.

Now the hundred ships behind, still after us through that hell of light and flame, were racing down upon us even as we sped between the giant flaming suns, and now from behind shot shaft upon shaft of the pale death-beams, hardly to be seen in the awful blinding glare. As the beams sprang toward us, though, Korus Kan swerved to the left, and for a moment it seemed that we had swerved from death in one form only to meet it in another, since at our terrific speed we veered millions of miles in that moment toward the left gigantic sun. Its boiling fires were all about us, seemed to encompass us, and then just as it seemed that we were racing into the mighty glowing corona to our deaths Korus Kan had swerved our ship backward into the center of the narrow gap. And now we were reaching that gap's end, were passing from between the giant suns, and out into more open space inside the great cluster, with the pursuing ships again leaping forward to loose their deadly beams.

Out from between the two great suns we flashed, before us now the interior of the mighty cluster, a great swarm of flaming suns that thronged space all about us, and about many of which swung great families of planets, dozens of whirling worlds. Even as we shot into the interior of the great cluster, though, from between the two giant suns, the hundred pursuing craft had leaped forward upon us with one great burst of sudden speed, were behind us, on each side, all about us. It was the end, we knew, and there was an instant of sheer silence as we waited for that end, waited for the pale beams of death from the ships about us. But before they could loose those beams there flashed suddenly upon them from each side other ships, two mighty masses of ships like our own, that burst suddenly out upon our pursuers from behind the two great suns between which we had just come. Ships like our own! Ships long and slender and gleaming! Ships of the Interstellar Patrol, striking at the vanguard of the invaders in defense of our universe.