They reached the after-deck whose stair's head gave a view of the wrecked tube-rooms beneath. The lower decks had been smashed by terrific forces. Kent's practiced eyes ran rapidly over the shattered rocket-tubes.

"They've back-blasted from being fired too fast," he said. "Who was controlling the ship when this happened?"

"Galling, our second-officer," answered Krell. "He had found us routed too close to the dead-area's edge and was trying to get away from it in a hurry, when he used the tubes too fast, and half of them back-blasted."

"If Galling was at the controls in the pilot-house, how did the explosion kill him?" asked Liggett skeptically. Krell turned quickly.

"The shock threw him against the pilot-house wall and fractured his skull—he died in an hour," he said. Liggett was silent.

"Well, this ship will never move again," Kent said. "It's too bad that the explosion blew out your tanks, but we ought to find fuel somewhere in the wreck-pack for the Pallas. And now we'd best get back."

As they returned up the dim corridor Kent managed to walk beside Marta Mallen, and, without being seen, he contrived to detach his suit-phone—the compact little radiophone case inside his space-suit's neck—and slip it into the girl's grasp. He dared utter no word of explanation, but apparently she understood, for she had concealed the suit-phone by the time they reached the upper-deck.

Kent and Liggett prepared to don their space-helmets, and before entering the airlock, Kent turned to Krell.

"We'll expect you at the Pallas first hour to-morrow, and we'll start searching the wreck-pack with a dozen of our men," he said.