Labels: text | wheel | person | clothing | machine OCR: COLONIZATION The atmosphere: the CELLS program TERRAFORMING A LOOK INTO THE FUTURE (Controlled Ecological Life-Support System) One of the major difficulties of long, manned expeditions to Mars is the problem of transporting supplies, food, and provisions for the astronauts. The longer the stay, the more costly and complicated it is bring supplies from Earth. One solution would be to set up ecosystems on Mars that could meet the astronauts' needs, before attempting to colonize the planet. This is the goal of NASA's Controlled Ecological Life Support System (CELLS) program and the BIOS experiments conducted by the Soviet Union. A human space traveler has certain daily requirements: about 840 grams of oxygen, 3 liters of water, and 620 grams of dehydrated food. The human body, in turn, produces waste: 3.4 liters of water, 1000 grams of carbon dioxide, and 110 grams of solid excrement. VSM In a closed system, these wastes can be recycled to meet certain basic needs. For example, plants can convert carbon dioxide to oxygen and water vapor, which after condensation and filtering can be used as drinking water. MARS BETAT
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