It hit him, then--a sudden blazing bolt of power that surged and seethed through his brain. Dimly, as from afar, he was aware that the yat-stick package had slipped from his grasp and fallen to the floor, the truth as to its contents revealed as the plastic covering fell away. For his own part, a strange paralysis seemed to grip him. He stood upright, erect as before; yet it was beyond his power to move a single muscle. Sight and hearing--he still had them, but with vastly limited acuity. And while his brain still functioned, it seemed to work slowly, painfully, as if laboring under almost more of a burden than it could bear. The captain and Nelva remained within the far periphery of his vision. Like him, both stayed motionless, frozen in the stance in which the brain-drain had trapped them. Now Dane focussed on the visiscreen. Moment by moment, it gave him the record of the course the robot-directed spaceship followed. Asteroids loomed, big and small; then disappeared once more. How long that phase went on, Dane never knew. His sense of time was far too warped to allow for even a reasonably intelligent estimate. But finally, the last of the asteroids fell away. Slowly, almost imperceptibly at first, the great globe of giant Jupiter moved in from the lower left corner of the screen. Numbly, Dane watched and wondered. What, if anything, would he find at Sandoz? Or would the city even be there? No one could say for sure, for no human had set foot on Callisto in the thirty years since it had been abandoned to the Kalquoi. Only then, before he could even glimpse any of the satellites that swept around Jupiter, a new object flashed onto the visiscreen. It was close, this one--so close that if he'd had the power, Dane would have covered his eyes out of sheer panic. Ball-round, the thing at first looked for all the world like a wandering asteroid or, perhaps, a giant meteor. Yet there was a strange sheen about it; a too-perfect symmetry. For a long moment, it hovered so close that it occupied almost half of the visiscreen. Then, suddenly, a light blazed from a point close to its perimeter: a tight cone of blinding radiance that turned the whole viewing plate white. The next instant, the visiscreen went dead. The lights died, too--all save the self-contained, dimly-luminous emergency radiation lamps. The rhythmic throbbing of the ventilating system halted also. So did the force drive's heavier beat. A sudden, incredible feeling of lightness came over Dane. Then his angle of view changed, and he realized that--unaware--he'd drifted clear of the floor; was now floating in mid-air. So the artificial gravity was off too. A numb horror crept through him in the same instant. In his mind he cursed himself for a blind, imperceptive fool.