At Galveston, Hunt learned about UNSA space suits and the standard items of ancillary equipment; he was taught the use of communication equipment, survival kits, emergency life support systems, and repair kits; he practiced test routines, radio-location procedures, and equipment-fault diagnostic techniques. "Your life could depend on this little box," one instructor told the group. "You could wind up in a situation where it fails and the only person inside a hundred miles to fix it is you." Doctors lectured on the rudiments of space medicine and recommended methods of dealing with oxygen starvation, decompression, heat stroke, and hypothermia. Physiologists described the effects on bone calcium of long periods of reduced body weight, and showed how a correct balance could be maintained by a specially selected diet and drugs. UNSA officers gave useful hints that covered the whole gamut of staying alive and sane in alien environments, from navigating afoot on a hostile surface using satellite beacons as reference points, to the art of washing one's face in zero gravity.

And so, just over four weeks after his directive from Caldwell, Hunt found himself fifty feet below ground level at pad twelve of number-two terminal complex twenty miles outside Houston, walking along one of the access ramps that connected the wall of the silo to the gleaming hull of the Vega. An hour later, the hydraulic rams beneath the platform supporting the tail thrust the ship slowly upward and out, to stand clear on the roof of the structure. Within minutes the Vega was streaking into the darkening void above. It docked thirty minutes later, two and a half seconds behind schedule, with the half-mile-diameter transfer satellite Kepler.

On Kepler the passengers traveling on to Luna—including Hunt, three propulsion-systems experts keen to examine the suspected Ganymean gravity drives, four communications specialists, two structural engineers, and Danchekker's team, all destined to join Jupiter Five—transferred to the ugly and ungainly Capella class moonship that would carry them for the remainder of the journey from Earth orbit to the Lunar surface. The voyage lasted thirty hours and was uneventful. After they had been in Lunar orbit for twenty minutes, the announcement came over the loudspeaker that the craft had been cleared for descent.