And, slowly, they drew near the planet they had selected for a first landing. It was the only possible selection. Of the seven planets in the system, six had already been measured as being of Jupiter size; this seventh one had a diameter of ten thousand miles. At 120 million miles from Alpha A, a sun 15 per cent hotter than Sol, it almost approximated Earth conditions. There was the added complication of the pale but sun-sized star, Alpha B, visible in the blackness little more than a billion miles from Alpha A, and the almost invisible C, too, would have its effect. But that scarcely mattered beside the fact that here was a planet of approximately the right size, and even at a distance it glowed with a jewel-like atmosphere.

Orbiting at four thousand miles from the surface of the planet, the giant Hope of Man maintained a velocity befitting its closeness – and the preliminary study began of a planet that was instantly observed to have cities on it.

What should have been the thrill, literally, of a lifetime, was a fearful fight against mounting tension. The instruments on the bridge, and in the alternative control room, in their quiet way reported surface and atmospheric conditions at least partially unfavorable to human life. Yet it was understood by everyone that readings taken at a distance were only indicative.

Once, when Lesbee II accompanied his father to the bridge, aging chemist Kesser came dragging over. 'The sooner we get down there into the atmosphere for the final testing, the better I'll like it,' he said.

Lesbee II had the same feeling, but his father only shook his head. 'You were just out of college, Mr. Kesser, when you signed up for the voyage. You have not that awareness of the standards of precaution by which we must act. That's the trouble aboard this ship. Those who were born during the trip will never begin to understand what efficiency is. I don't intend to inspect this planet directly for at least two weeks, possibly even longer.'