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In human spaceflight, a life-support system is a group of devices that allow a human being to survive in outer space. US government space agency NASA , [ 2 ] and private spaceflight companies use the phrase "environmental control and life-support system" or the acronym ECLSS when describing these systems. [ 3 ]
A diverse range of arguments of how to relate to space beyond human presence have been raised, with some seeing space beyond humans as reason to venture out into space and exploring it, some aiming for contact with extraterrestrial life, to arguments for protection of humanity or life from its possibilities. [68] [69]
Space and survival is the idea that the long-term survival of the human species and technological civilization requires the building of a spacefaring civilization that utilizes the resources of outer space, [1] and that not doing this might lead to human extinction. A related observation is that the window of opportunity for doing this may be ...
The immediate needs for breathable air and drinkable water are addressed by a life support system, a group of devices that allow human beings to survive in outer space. [15] The life support system supplies air, water and food. It must also maintain temperature and pressure within acceptable limits and deal with the body's waste products ...
In human spaceflight, the life support system is a group of devices that allow a human being to survive in outer space. NASA often uses the phrase Environmental Control and Life Support System or the acronym ECLSS when describing these systems for its human spaceflight missions. [30] The life support system may supply: air, water and food. It ...
Environments do not need to contain life to be considered habitable nor are accepted habitable zones (HZ) the only areas in which life might arise. [ 3 ] As the existence of life beyond Earth is unknown, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear ...
An artist's conception shows a terraformed Mars in four stages of development.. Terraforming or terraformation ("Earth-shaping") is the hypothetical process of deliberately modifying the atmosphere, temperature, surface topography or ecology of a planet, moon, or other body to be similar to the environment of Earth to make it habitable for humans to live on.
Strong stellar winds can also strip gas atoms from the top of an atmosphere causing them to be lost to space. To support an Earth-like atmosphere for about 4.6 billion years (Earth's current age), a moon with a Mars-like density is estimated to need at least 7% of Earth's mass. [20]