Dials spun and needles quivered. Rapidly Russ jotted down the readings on a sheet of paper. At the calculator, he tapped keys, depressed the activator. The machine hummed and snarled and chuckled.
Russ glanced at the result imprinted on the paper roll.
"Craven is out near Jupiter," he announced. "About 75,000 miles distant from its surface, in a plane normal to the Sun's rays."
"A spaceship," suggested Greg.
Russ nodded. "That's the only answer."
The two men looked at one another.
"That's something we can get hold of," said Greg.
He walked to the ship controls and lowered himself into the pilot's chair. A hand came out and hauled back a lever.
The Invincible moved.
From the engine rooms came the whine of the gigantic power plant as it built up and maintained the gravity concentration center suddenly created in front of the ship.