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Updated: May 28, 2025


Then Nelsen took his turn, sitting as if within an inclosed vault, hearing the gurgle of bubbles passing through the green, almost living fluid of the air-restorer capsule. Chlorophane, like the chlorophyl of green plants, could break up exhaled carbon dioxide, freeing the oxygen for re-breathing.

When they switched in the new current, the pumps of their equipment worked better at once. The internal lights of their air-restorers could be used again, augmenting the action of the pale sunshine on the photosynthetic processes of the chlorophane. The air they breathed improved immediately. They tested the power on the shaky ionics, and got a good thrust reaction.

The air-restorers were going to be the toughest and most expensive to make. They were the really vital things to a spaceman. Every detail had to be carefully fitted and assembled. The chlorophane contained costly catalytic agents. A winter of hard work was ahead, but they figured on a stretch of clear sailing, now.

They laced carefully, following all they had learned from books. They rolled the wire-braced silicone rubber body-section up over his torso, guided his arms into the sleeves, closed the zipper-sealers and centered the chest plate. While the others checked with their eyes, they inspected the nipples of the moisture-reclaimer and chlorophane air-restorer capsules.

Out here, unlike on the Moon at night, the air-restorers could also take direct solar energy through their windows. They needed current only for their pumps. But the green chlorophane, key to the freshening and re-oxygenation of air, was getting slightly pale. The moisture-reclaimers were by luck not as bad as some of the other vital parts. Ramos touched his needled side.

The small nuclear battery which energized the moisture-reclaimer, the heating units, and especially the air-restorer not only for turning its pumps but for providing the intense internal illumination necessary to promote the release of oxygen in the photosynthetic process of the chlorophane when there was no sun had been replaced by a chemical battery of a far smaller active life-span!

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