Yes, strangely enough there was still sufficient water beneath the surface of Vesta. Its parent planet, like the Earth, had had water in its crust, that could be tapped by means of wells. And so suddenly had Vesta been chilled in the cold of space at the time of the parent body's explosion, that this water had not had a chance to dissipate itself as vapor into the void, but had been frozen solid. The drying soil above it had formed a tough shell, which had protected the ice beneath from disappearance through sublimation... Drill down to it, melt it with heat, and it was water again, ready to be pumped and put to use. And water, by electrolysis, was also an easy source of oxygen to breathe.... The soil, once thawed over a few acres, would also yield considerable nitrogen and carbon dioxide--the makings of many cubic meters of atmosphere. The A.H.O. survey expeditions, here on Vesta and on other similar asteroids which were crustal chips of the original planet, had done their work well, pathfinding a means of survival here. When John Endlich pumped the first turbid liquid, which immediately froze again in the surface cold, he might, under other, better circumstances, have felt like cheering. His well was a success. But his tense mind was racing far ahead to all the endless tasks that were yet to be done, to make any sense at all out of his claim. Besides, the short day--eighteen hours long instead of twenty-four, and already far advanced at the time of his tumultuous landing--was drawing to a close. "It'll be dark here mighty quick, Johnny," Rose said. She was looking scared, again. * * * * * John Endlich considered setting up floodlights, and working on through the hours of darkness. But such lights would be a dangerous beacon for prowlers; and when you were inside their area of illumination, it was difficult to see into the gloom beyond. Still, one did not know if the mask of darkness did not afford a greater invitation to those with evil intent. For a long moment, Endlich was in an agony of indecision. Then he said: "We'll knock off from work now--get in the tent, eat supper, maybe sleep..." But he was remembering Neely's promise to return tonight. In another minute the small but dazzling sun had disappeared behind the broken mountains, as Vesta, unspherical and malformed, tumbled rather than rotated on its center of gravity. And several hours later, amid heavy cooking odors inside the now inflated plastic bubble that was the tent, Endlich was sprawled on his stomach, unable, through well-founded worry, even to remove his space suit or to allow his family to do so, though there was breathable air around them. They lay with their helmet face-windows open. Rose and Evelyn breathed evenly in peaceful sleep.