Back at the controls he threw out a gigantic tractor beam, catching the other ship in a net of forces that visibly cut its speed.

Space suddenly vomited lashing flame that slapped back and licked and crawled in living streamers over the surface of the Invincible. The engines moaned in their valiant battle to keep up the outer screen. The pungent odor of ozone filtered into the control room. The whole ship was bucking and vibrating, creaking, as if it were being pulled apart.

"So they don't want to fight, eh?” hooted Russ.

Greg gritted his teeth. “They snapped the tractor beam."

"They have power there,” Russ declared.

"Too much,” said Greg. “More power than they have any right to have."

His hand went out to the lever on the board and pulled it back. A beam smashed out, with the engines’ screaming drive behind it, billions of horsepower driving with unleashed ferocity at the other ship.

Greg's hand spun a dial, while the generators roared thunderous defiance.

"I'm giving them the radiation scale,” said Greg.

The Interplanetarian was staggering under the terrific bombardment, but its screen was handling every ounce of the power that Greg was pouring into it.