Living on Other Worlds - Research Article from Macmillan Science Library: Space Sciences

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The Basic Necessities

Oxygen is certainly the most important of human necessities. Humans can live for days without food or water but only minutes without oxygen. Earth is the only known place that has a breathable atmosphere. The Moon has no atmosphere, and the Martian atmosphere is 95 percent carbon dioxide at a pressure only one-hundredth that of Earth's atmosphere.

The housing and equipment needed for settling other worlds would incorporate adaptations made to suit alien environments. The housing and equipment needed for settling other worlds would incorporate adaptations made to suit alien environments.

Airtight habitats are necessary. They come in various sizes, ranging from a large dome enclosing an entire settlement to a small space suit enclosing an individual. Inside the habitat, the temperature, pressure, and oxygen content would be controlled. Pressure must be sufficient that lungs operate efficiently and oxygen is absorbed into the bloodstream. On Earth, sea-level pressure is 14.7 pounds per square inch (psi), but people live comfortably in mountain towns...

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This section contains 1,842 words
(approx. 7 pages at 300 words per page)
Buy the Living on Other Worlds Encyclopedia Article
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Macmillan Science Library: Space Sciences
Living on Other Worlds from Macmillan Science Library: Space Sciences. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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