“The men are complaining like babies, Rob,” Jim said. “Do you think they’ll be any good to us?”

“They’ll have to be, Jim,” Rob answered grimly. “They’re all we have.”

Jim looked at his stalwart young friend in admiration. “You and Grant are all right, Rob. Not many men would risk their careers on an old man’s whims. Aren’t you scared—just a little bit?”

“I’m plenty scared,” Rob told him, with a nervous smile. “I’m only a subofficer of five months, and here I am in charge of an expedition. Don’t think that isn’t frightening. In a sense, the lives of all men aboard the ship will be in my hands after we land.”

“If you need me,” Jim assured him, “here’s one buddy you can count on.”

Two days later the Centaurus had intercepted the orbit of Titania and was beginning to barrel surfaceward. Rob, looking outside from the officer’s platform up forward, saw a huge rocky world filling the port, its mantle of ice shimmering in the reflected light of the unseen primary body.

The Centaurus dropped lower over a plateau that Rob had pointed out to Mr. Brigger as the spot where Dr. Franz had visited. The underjets threw out pencils of braking power to check the plunge of the space ship.

Finally the Centaurus touched down on its tail fins and then Spacemaster Brigger said to Rob, “It’s all yours now, Allison.”

Looking out over the hoary wilderness, completely airless because of the little world’s inability to retain an atmosphere, Rob felt suddenly incompetent. Only now did he realize fully his youthful inexperience. It was one thing to be an idle witness on a journey; it was another to be in charge of a crew of men.

Rob heard footsteps on the platform and turned to see Jim Hawley walking up. Jim grinned in his engaging fashion, and it was like a tonic to Rob’s spirits.