"You heard, boys,” said John Thorn tightly. “There's just one thing to do — run the swarm."

"Let her go!” grinned Sual Av. “It takes more than a few meteors to stop the Planeteers."

"One thing sure,” said Gunner grimly. “If we do run it safely, we'll lose those cruisers. They won't dare follow."

John Thorn knew the peril into which their little ship was roaring. The chance of their winning through that vast, whirling stone-storm was less than one in two.

But the naval cruisers would not follow them in there, he was sure. And if he could run the swarm, he would be well inside the Zone and could turn and run counter-sunwise toward the asteroid Turkoon without fear of further pursuit.

"Here goes!” Sual Av breathed, as the aura-chart showed their ship approaching the edge of the great swarm.

The chart showed the two converging cruisers making a frantic effort to head them off. But it was too late. Already, in the chart, the Planeteers’ ship was entering the swarm.

Thorn looked forth tensely through the window. The aura was useless, now that they were actually in the swarm. His only chance now was in the quickness of his eyes and hands.

Space outside the window still looked empty, for the density of even the densest meteor swarm is not high. But Thorn could glimpse all around them the quick red glows, quickly fading and re-appearing, of meteors colliding and fusing.

A jagged black oblong mass turning over slowly, expanded with lightning speed in front of him. His hand smashed a starboard-tube firing key, and the little ship lurched wildly aside from the oncoming monster.