Now, as our ship raced on toward that mighty ocean of flaming gas, the pointer on the outside-heat dial was creeping steadily forward, though the ship's interior was but slightly warmer, due to the super-insulation of its walls. We were passing into a region of heat, we knew, that would have destroyed any ship but our own, and that thought held us silent as our humming craft raced on. And now the sky before us, a single vast expanse of glowing flame, was creeping downward across our vision as the cruiser's bow swung up. Minutes more, and the whole vast flaming nebula lay stretched beneath us, instead of before us, and then we were dropping smoothly down toward it.
Down we fell, my hand on the control lever gradually decreasing our speed, now moving at a single light-speed, now at half of that, and still slower and slower, until at last our craft hung motionless a scant thousand miles above the nebula's flaming surface, a tiny atom in size compared to the colossal universe of fire above which it hovered. For from horizon to horizon beneath us, now, stretched the nebula, in terrible grandeur. Its flaming sea, we saw, was traversed by great waves and currents, currents that met here and there in gigantic fiery maelstroms, while far across its surface we saw, now and then, great leaping prominences or geysers of flaming gas, that towered for an instant to immense heights and then rushed back down into the fiery sea beneath. To us, riding above that burning ocean, it seemed at that moment that in all the universe was only flame and gas, so brain-numbing was the fiery nebula's magnitude.
Hanging there in our little cruiser we stared down at it, the awe we felt reflected in each other's eyes. I saw now by the dial that the temperature about us was truly terrific, over a thousand degrees, and what it might be in the raging fires below I could not guess. But nowhere was there any sign of what might have set the great nebula to spinning, for our instruments recorded no ether-disturbances around the surface, nor any other phenomena which might give us a clue. And, looking down, I think that we all felt, indeed, that nothing was in reality capable of affecting in any way this awesome nebula, the vastest thing in all our universe.
At last I turned to the others. "There's nothing here," I said. "Nothing to show what's caused the nebula's spinning. We must go on, across its surface——"
With the words I reached forward toward the control levers, then abruptly whirled around as there came a sudden cry from Sar Than, at the window.
"Look!" cried the Arcturian, pointing down through the window, his eyes starting. "Below us—look!"
I gazed down, then felt the blood drive from my heart at what I saw. For directly beneath us one of the vast prominences of flaming gas was suddenly shooting up from the nebula's surface, straight toward us, a gigantic tongue of fire beside which our ship was but as a midge beside a great blaze. I shouted, sprang to the controls, but even as I laid hands on the levers there was a tremendous rush of blinding flame all about our ship, and then we three had been flung violently into a corner of the pilot room and the cruiser was being whirled blindly about with lightning speed by the vast current of flaming gas that had gripped it.
All about us was the thunderous roaring of the fires that held us, and now as we sprawled helpless on the room's floor I sensed that our ship was falling, plunging down with the downward-sinking geyser of flame that held it. Struggling to gain my feet, while the pilot room spun dizzily about me, I glimpsed through the shifting fires outside the window the nebula's flaming surface, just below us, a raging sea of fiery gas toward which we were dropping plummetlike. Then, as a fresh gyration of the plunging ship flung me once more to the floor, I heard the thundering roar about us suddenly intensified, terrible beyond expression, while now through the window was visible only a single solid mass of blinding flame, and while our cruiser at the same moment rocked and whirled crazily beneath the impetus of a dozen different forces. And as understanding of what had happened flashed across my brain I cried out hoarsely to my two companions.
"The nebula!" I cried. "That current that held us has sucked us down into the nebula itself!"
All about us now was only one tremendous sheet of fire, whose heat was rapidly penetrating through even our heat-resistant walls and windows. Swiftly the air in the little pilot room was becoming hot, suffocating, and already the walls were burning to the touch. The ship, I knew, could not stand such heat for many minutes more, yet every moment was taking us farther into the nebula's fiery depths, whirling us wildly on with velocity inconceivable. Born by its mighty interior currents we were sweeping on and on into that universe of flame, its vast fires roaring about us like the thunder of doom, deafening, awful, a cosmic, bellowing clamor that was like the mighty shouting of a universe made vocal.