Startled, our eyes lifted to where the Antarian pointed, toward the big space-chart on the wall above the window. A great rectangle of smooth, burnished metal, upon its flat surface were represented all in the heavens immediately about us. On the chart's left side there shone scores of little circles of glowing light, extending outward from the left edge for several inches, representing the outmost suns of the great galaxy to our left. Inches outward from the outermost of those glowing circles there moved upon the blank metal, creeping upward in a course parallel to the galaxy's edge, a formation of a dozen tiny black dots, the dots that were our squadron of ships, holding to our regular patrol far out from the galaxy's edge. And inches outward from our ship-dots, in turn, out in the blank metal at the chart's right, there moved inward toward us and toward the galaxy a great swarm of other black dots, a close-massed cluster of thousands of dots there on the chart that represented, we knew, a mighty swarm of matter moving in out of the void of outer space toward our ships and toward the galaxy to our left!
"A swarm of meteors!" I exclaimed. It could be nothing else, I knew, that was approaching our galaxy out of the unplumbed, awful void. "A swarm of meteors from outer space! And moving at unthinkable speed!"
"A swarm of meteors from outer space," repeated Korus Kan, thoughtfully. "It's unprecedented—and yet the space-chart doesn't lie."
I glanced again at the big chart. "The swarm's heading almost straight toward us," I said, watching the close-massed dots creeping across the big chart. "But it's traveling at thousands of light-speeds, and must be caught in an ether-current of inconceivable velocity."
"Its speed seems to be steadily slackening, though," said Jhul Din as we gazed up at the space-chart in silent awe.
I nodded. "Yes, but it ought to reach us within a few more hours. We'll halt our ships here until it reaches us, and as it passes we can ascertain its extent and report to General Patrol Headquarters at Canopus. They can send out meteor-sweeps then to destroy the swarm before it can enter the galaxy and menace interstellar navigation."
Even while I spoke Korus Kan had swiftly shifted the levers in his grasp, quickly reducing our craft's great speed, while the half-score of ships behind us slowed their own flight at the same moment in answer to his signal. The humming drone of our great propulsion-vibration generators waned to a thin whine and then died altogether as our ships came to a halt, while at the same moment the dozen ship-dots on the space-chart ceased to move also, hanging motionless on that chart as we were hanging motionless in space. Inches to the right of them, though, the close-massed dots of the mighty swarm were still creeping steadily across the chart, though now their unheard-of speed was fast slackening. In silent awe we regarded them. Out there in the awful void beside us, we knew, the great swarm was rushing ever closer toward us even as those thousands of close-massed dots crept toward our own ship-dots, and a strange tension held us as we watched them moving nearer.
To any of our comrades in the Interstellar Patrol it would have seemed strange enough, no doubt, the tense silence in which we watched the approach of the swarm, for surely a meteor-swarm more or less was nothing new to us. We had met with many a one in our patrols inside the galaxy, and many a time had aided in the work of the great star-cruising meteor-sweeps which keep free of them the space-lanes between the galaxy's suns. But this swarm, rushing toward us out of the mighty depths of outer space, was different. Never in all our history had any such mighty swarm of matter as this come toward our galaxy from the unplumbed outer void, and at such a speed as this one. For though it was moving slower and slower there on the space-chart, the great swarm was still flashing through space toward the galaxy at more than a thousand light-speeds, a velocity greater than that of any of our ships.
Silently we watched, there in the pilot room, while the swarm of close-massed dots crept across the big space-chart, toward the galaxy and toward the dozen dots that were our ships. Slower and slower still it was moving, its speed smoothly and steadily decreasing as it swept in toward the galaxy from outer space. Such a decrease in speed was strange enough, we knew, but knew too that if the swarm was being borne on toward us by a terrific ether-current its speed would slacken as the speed of the current slackened.