Below us now lay the giant red-glowing globe of the coma, racing on toward the far swarm of light-points that was our galaxy. And now, gazing intently down into its far-flung glowing mass, I strained my eyes for sight of some opening, some crevice in that mighty body of glowing electrical energy that would permit us to penetrate to the space inside it. Yet no such opening could be seen, no tiniest break in the coma's lurid sphere. A single, unbroken and gigantic globe of crimson luminescence, it hung beneath us, as we rushed through the void, the vast fan-tail of faintest crimson light streaming out behind. Through all our days of tense flight outward toward the comet I had hoped against hope that in its coma would be some break or opening, however small, that would permit us to penetrate inside, but now my last hope, and the galaxy's last hope, was shattered by the glowing, unbroken mass of this gigantic comet's coma. With sinking heart I gazed down toward it as our triangle of ships sped on above it.

Gor Han's deep voice sounded from the instrument before me. "There seems no opening in the coma at all, Khel Ken," he said. "And it is instant annihilation for anything to venture into that coma's electrical energy!"

"We'll have to drop lower and cruise about the coma's surface," I told the Betelgeusan. "We must get inside, somehow!"

With the words our cruiser began to sink smoothly downward, still holding its forward flight above the comet, the massed ships behind following steadily in our course. Down—down—by thousands of miles a moment we sank, down until the giant coma beneath seemed the only thing in all the universe, glowing from horizon to horizon like an awful aurora of crimson death. An inconceivably colossal sea of lurid electrical energy, a giant deadly sphere of glowing force which it were annihilation for anything to touch, it stretched beneath us, broadening still as we came closer toward it. Down—down——

A cry from Najus Nar sounded beside me. "Those cubes!" the insect-man was shouting. "Racing ahead of the comet there!"

Swiftly I gazed down toward the foremost rim of the great, onrushing coma, and saw what he had seen. Racing along a few thousand miles in front of the comet, separated from each other by great spaces, there sped score upon score of mighty metal cubes, glinting in the coma's lurid light! Distant as they were, I could glimpse them clearly through our telescopic windows, extending in a great chain or line around the comet's head, and rushing before it through the deeps of space. And there were openings in the sides of these speeding cubes, transparent openings from which gushed pure white light! For they were ships! Colossal cube-ships flashing on with the great comet on its thundering rush toward our universe!

"Cube-ships!" It was Gor Han's shout that echoed my thought.

"Cube-ships!" Najus Nar too was crying. "Scouting before the comet!"

"And that means that these cube-ships are from the comet's heart!" I cried excitedly; "from its——"

My exclamation had been cut short by simultaneous sharp cries from Gor Han and Jurt Tul.