An hour after we had left the solar system Hal Kur and I still stood with Sarto Sen in the cruiser's conning-tower, staring out with him at the stupendous panorama of gathered stars that lay before us. The sun of our own system had dwindled to a far point of light behind us, by that time, one star among the millions that spangled the deep black heavens around us. For here, even more than between the planets, the stars lay before us in their true glory, undimmed by proximity to any one of them. A host of glittering points of fire, blue and green and white and red and yellow, they dotted the rayless skies thickly in all directions, and thronged like a great drift of swarming bees toward our upper left, where stretched the stupendous belt of the Milky Way. And dead ahead, now, shone a single orb that blazed in smoky, crimson glory, a single great point of red fire. It was Alto, I knew, the sullen-burning star that was our goal.
It was with something of unbelief that I gazed at the red star, for though the dials before me assured me that we were speeding on toward it at close to two hundred thousand miles a second, yet except for the deep humming of the craft's vibratory apparatus one would have thought that the ship was standing still. There was no sound of wind from outside, no friendly, near-by planets, nothing by which the eye could measure the tremendous velocity at which we moved. We were racing through a void whose very immensity and vacancy staggered the mind, an emptiness of space in which the stars themselves floated like dust-particles in air, a gulf traversed only by hurtling meteors or flaring comets, and now by our own frail little craft.
Though I was peculiarly affected by the strangeness of our position, big Hal Kur was even more so. He had traveled the space-lanes of the solar system for the greater part of his life, and now all of his time-honored rules of interplanetary navigation had been upset by this new cruiser, a craft entirely without gravity-screens, which was flashing from sun to sun propelled by invisible vibrations only. I saw his head wagging in doubt as he stared out into that splendid vista of thronging stars, and in a moment more he left us, descending into the cruiser's hull for an inspection of its strange propulsion apparatus.
When he had gone I plunged at once into the task of learning the control and operation of our craft. The next two hours I spent under the tutelage of Sarto Sen, and at the end of that time I had already learned the essential features of the ship's control. There was a throttle which regulated the frequency of the vibrations generated in the engine-room below, thus increasing or decreasing our speed at will, and a lever and dial which were used to project the propelling vibrations out at any angle behind us, thus controlling the direction in which we moved. The main requisite in handling the craft, I found, was a precise and steady hand on the two controls, since a mere touch on one would change our speed with lightning swiftness, while a slight movement of the other would send us millions of miles out of our course almost instantly.
At the end of two hours, however, I had attained sufficient skill to be able to hold the cruiser to her course without any large deviations or changes of speed, and Sarto Sen had confidence enough in my ability to leave me alone at the controls. He departed down the little stair behind me, to give a few minutes' inspection to the generators below, and I was left alone in the conning-tower.
Standing there in the dark little room, its only sound the deep humming of the generators below and its only lights the hooded glows which illuminated the dials and switches before me, I gazed intently through the broad fore-window, into that crowding confusion of swarming suns that lay around us, that medley of jeweled fires in which the great star Alto burned like a living flame. For a long time I gazed toward the star that was our goal, and then my thoughts were broken into by the sound of Sarto Sen reascending the stair behind me. I half turned to greet him, then turned swiftly back to the window, stiffening into sudden attention.
My eyes had caught sight of a small patch of deep blackness far ahead, an area of utter darkness which was swiftly expanding, growing, until in less than a second, it seemed, it had blotted out half the thronging stars ahead. For a moment the sudden appearance of it dumfounded me so that I stood motionless, and then my hands leaped out to the controls. I heard Sarto Sen cry out, behind me, and had a glimpse of the darkness ahead, obscuring almost all the heavens. The next moment, before my hands had more than closed upon the levers, all light in the conning-tower vanished in an instant, and we were plunged into the most utter darkness which I have ever experienced. At the same moment the familiar hum of the vibration-generators broke off suddenly.
I think that the moment that followed was the one in which I came first to know the meaning of terror. Every spark of light had vanished, and the silencing of the vibration-generators could only mean that our ship was drifting blindly through this smothering blackness. From the cruiser's hull, below, came shouts of fear and horror, and I heard Sarto Sen feeling his way to my side and fumbling with the controls. Then, with startling abruptness, the lights flashed on again in the conning-tower and through the windows there burst again the brilliance of the starry heavens. At the same moment the vibration-generators began again to give off their deep humming drone.
Sarto Sen turned to me, his face white as my own. Instinctively we turned toward the conning-tower's rear-window, and there, behind us, lay that stupendous area of blackness from which we had just emerged. A vast, irregular area of utter darkness, it was decreasing rapidly in size as we sped on away from it. In a moment it had shrunk to the spot it had been when first I glimpsed it, and then it had vanished entirely. And again we were racing on through the familiar, star-shot skies.
I found my voice at last. "In the name of the Power," I exclaimed, "what was that?"
Sarto Sen shook his head, musingly. "An area without light," he said, half to himself; "and our generators-they, too, could not function there. It must have been a hole, an empty space, in the ether itself."
I could only stare at him in amazement. "A hole in the ether?" I repeated.
He nodded quickly. "You saw what happened? Light is a vibration of the ether, and light was non-existent in that area. Even our generators ceased to give off etheric vibrations, there being no ether for them to function in. It's always been thought that the ether pervaded all space, but apparently even it has its holes, its cavities, which accounts for those dark, lightless areas in the heavens which have always puzzled astronomers. If our tremendous speed and momentum hadn't brought us through this one, the pull of the different stars would have slowed us down and stopped us, prisoning us in that dark area until the end of time."
I shook my head, only half-listening, for the strangeness of the thing had unnerved me. "Take the controls," I told Sarto Sen. "Meteors are all in the day's work, but holes in the ether are too much for me."
Leaving him to his watch over the ship's flight, I descended to the cruiser's interior, where the engineers were still discussing with Hal Kur the experience through which we had just passed. In a few words I explained to them Sarto Sen's theory, and they went back to their posts with awed faces. Passing into the ship's living-quarters myself, I threw myself on a bunk there and strove to sleep. Sleep came quickly enough, induced by the generators' soothing drone, but with it came torturing nightmares in which I seemed to move blindly onward through endless realms of darkness, searching in vain for an outlet into the light of day.
* * *
When I awoke some six hours later, the position of the ship seemed quite unchanged. The steady humming of its generators, the smooth, onward flight, the legions of dazzling stars around us, all seemed as before. But when I ascended again to the conning-tower, to relieve Sarto Sen at the controls, I saw that already the star Alto had increased a little its brilliance, dimming the stars around and behind it. And through the succeeding hours of my watch in the conning-tower, it seemed to me almost that the red orb was expanding before my sight, as we hurtled on toward it. That, though, I knew to be only an illusion of my straining eves.
But as day followed day-sunless, dawnless days which we could measure only by our time-dials-the crimson star ahead waxed steadily to greater glory. By the time we marked off the twentieth day of our flight Alto had expanded into a moon of crimson flame, whose sullen splendor outrivaled the brilliance of all the starry hosts around us; for by that time we had covered half the distance between our own sun and the dying one ahead, and were now flashing on over the last half of our journey.
Days they were without change, almost without incident. Twice we had sighted vast areas of blackness, great ether-cavities like the one we had first plunged through, but these we were fortunate enough to avoid, swerving far out of our course to pass them by. Once, too, I had glimpsed for a single moment a colossal black globe which flashed beside our path for an instant and then was left behind by our tremendous speed. Only a glimpse did I get of this dark wanderer, which might have been either a runaway planet or burned-out star. And once our ship blundered directly into a vast maelstrom of meteoric material, a mighty whirlpool of interstellar wreckage spinning there between the stars, and from which we won clear only by grace of Sarto Sen's skillful hands at the controls.
Except for these few incidents, though, our days were monotonous and changeless, days in which the care of the generators and the alternate watches in the conning-tower were our only occupations. And a strange stillness had seized us as we fled onward, a brooding silence that fastened itself upon my friends even as upon myself. Something from the vast, eternal silence through which we moved, some quality out of those trackless infinities of space, seemed to have entered into our inmost souls. We went about our duties like men in a dream. And dreamlike our life had become to us, I think, and still more remote and unreal and dreamlike had become the life of the eight worlds that lay so far behind us.
I had forgotten, almost, the mission upon which we sped, and through the long watches in the conning-tower my eyes followed the steady largening of the red sun ahead with curiosity only. Day by day its fiery disk was creeping farther across the heavens, until at last everything in the cruiser was drenched by the crimson, bloodlike light that streamed in through our sunward windows. Then, at last, my mind came back to consideration of the work that lay before us, for over thirty days of our journey had passed and there remained less than a hundred billion miles between Alto and ourselves.
I gave orders to slow our progress, then, and at a somewhat slackened speed our cruiser began to slant up above the plane of the great sun, for it was my plan to gain a position millions of miles directly above the star and then hover there, accompanying it on its race through space and using the powerful little telescopic windows in the conning-tower for our first observations. So through the next two days the giant sun, a single great sea of crimson fire to our eyes, crept steadily downward across the skies as we slanted over it. Our outside instruments showed us that its heat was many times less than that of our own sun, for this was a dying star. Even so it was necessary to slide special light-repelling shields over all our windows, so blinding was the star's glare.
* * *
On the fortieth day of our journey we had reached our goal. Gathered in the conning-tower, Sarto Sen, Hal Kur and I gazed down through its circular, periscopic under-window at the mighty star beneath. We had reached a spot approximately twenty million miles above the sun and had turned our course, so that we now raced above it at a speed that matched its own, like a fly hovering over a world. Below us there lay only a single vast ocean of crimson flame, that reached almost from horizon to horizon, all but filling the heavens beneath us. It was in an awed silence that we gazed down into this tremendous sea of fire, knowing as we did that only the power of the ship's generators kept it from plunging downward.
"And we are expected to investigate-that!" said Hal Kur, gazing down into the hell of flame below. "They talk of turning that aside!"
I looked at him, hopelessly. Then, before I could speak, there came a sudden exclamation from Sarto Sen, and he beckoned me to his side. He had been staring out through one of the powerful little telescopic windows set in the conning-tower's wall, and as I reached him he pointed eagerly through it, out beyond the rim of the fiery sun beneath. I gazed in that direction, straining my eyes against the glare, and then glimpsed the thing that had attracted his attention. It was a little spot of dun-colored light lying beyond the crimson sun, a buff-colored little ball that hung steady behind the great sun at a distance of perhaps a hundred million miles and that accompanied it on its flight through space.
"A planet!" I whispered, and he nodded. Then Hal Kur, who had joined us, extended his hand too, with a muttered exclamation, and there, thrice the distance of the first from Alto, there hung another and smaller ball. In a few minutes, using the powerful inset glasses, we had discovered no less than thirteen worlds that spun about the sun beneath us and that accompanied it on its tremendous journey through space. Most seemed to revolve in orbits that were billions of miles from their parent sun, and none of the others was as large as that inmost planet which we had first discovered. It was toward this largest world that we finally decided to head first; so with Sarto Sen at the controls we slanted down again from our position over the great sun, arrowing down at reduced speed toward the inmost world.
Its color was changing from buff to pale red as we neared it, and its apparent size was increasing with tremendous speed as our craft shot down toward it. Gradually, though, Sarto Sen decreased our velocity until by the time we reached an altitude of a few hundred miles above this world our ship was moving very slowly. And now, from outside, came a thin shrieking of wind, a mounting roar that told us plainly that we were speeding through air again, and that this world had at least an atmosphere. None of us remarked on that, though, all our attention being held by the scene below.
Drenched in the crimson light of the sun behind us, it was a crimson world that lay beneath us, a lurid world whose mountains, plains and valleys were all of the same bloodlike hue as the light that fell upon them, whose very lakes and rivers gave back to the sky the scarlet tinge that pervaded all things here. And as our cruiser swept lower we saw, too, that the redness of the planet beneath was no mere illusion of the crimson sunlight but inherent in itself, since all of the vegetation below, grassy plains and tangled shrubs and stunted, unfamiliar trees, were of that same red tinge that was the color-keynote of this world.
Strange and weird as it appeared, though, there seemed no sign of life on the broad plains and barren hills beneath us, and abruptly Sarto Sen headed the ship across the planet's face, speeding low over its surface while we scanned intently the panorama that unrolled beneath us. For minutes our straining scrutiny was unrewarded; and then, far ahead, a colossal shape loomed vaguely through the dusky crimson light, taking form, as we sped on toward it, as a tremendous, soaring tower. And involuntarily we gasped as our eyes took in the hugeness of its dimensions. It consisted of four slender black columns, each less than fifty feet in thickness, which rose from the ground at points a half-mile separated, four mighty pillars which slanted up into the crimson sunlight for fully ten thousand feet, meeting and merging at that distance above the ground and combining to support a circular platform, and on it we could see the shapes of what appeared to be machines, and other shapes that moved about them, though whether these last were human or not could not be distinguished from our height. And then, as my gaze fell toward the mighty tower's base, my cry brought the eyes of the others to follow my pointing finger. For gathered beneath and around the tower and extending away into the surrounding country were the massed buildings of a city. Low and flat-roofed and utterly strange in appearance were those buildings, and the narrow streets that pierced their huddled masses were all of the same smooth blackness as the tower itself-black, deep black, the roofs and streets and walls, laced with crimson parks and gardens that lay against their blackness like splashes of blood. And looming over all, its four tremendous columns rearing themselves above the streets and roofs and gardens like the limbs of a bestriding giant, the mighty tower soared into the crimson sunlight.
Sarto Sen flung an arm down toward the tower's platform, beneath us, and toward the shapes that moved on that platform. "Inhabited!" he cried. "You see? And that means that Alto's change in course was-"
He broke off; uttered a smothered cry. A spark of intense white light had suddenly broken into being on the platform beneath us, a beam of blinding light that stabbed straight up toward us, bathing the cruiser in its unearthly glow. And suddenly our ship was falling!
Sarto Sen sprang to the controls, wrenched around the power-lever. "That ray!" he cried. "It's attractive! — it's pulling us down!"
Our ship was vibrating now to the full force of its generators, but still we were falling, plunging headlong down toward the round platform beneath. I glimpsed Sarto Sen working frantically with the controls, and heard a hoarse cry from Hal Kur. There was a blinding glare of light all around us, now, and through the window I saw the platform below rushing up toward us with appalling speed. It was nearer, now… nearer… nearer… crash!