Search results
Results from the WOW.Com Content Network
Differentiating human presence in space between direct and mediated human presence, meaning human or non-human presence, such as with crewed or uncrewed spacecraft, is rooted in a history of how human presence is to be understood (see dedicated chapter).
Bioastronautics is a specialty area of biological and astronautical research which encompasses numerous aspects of biological, behavioral, and medical concern governing humans and other living organisms in outer space; and includes the design of space vehicle payloads, space habitats, and life-support systems.
A convenient example of what constitutes a non-physical entity is a ghost. Gilbert Ryle once labelled Cartesian dualism as positing the " ghost in the machine ". [ 9 ] [ 10 ] However, it is hard to define in philosophical terms what it is, precisely, about a ghost that makes it a specifically non-physical, rather than a physical entity.
Happiness, or the state of being happy, is a human emotional condition. The definition of happiness is a common philosophical topic. Some define it as experiencing the feeling of positive emotional affects, while avoiding the negative ones. [328] [329] Others see it as an appraisal of life satisfaction or quality of life. [330]
Nucleic acids may not be the only biomolecules in the universe capable of coding for life processes. [1]Astrobiology (also xenology or exobiology) is a scientific field within the life and environmental sciences that studies the origins, early evolution, distribution, and future of life in the universe by investigating its deterministic conditions and contingent events. [2]
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 ]
Stephen Hawking is a supporter of space travel, in part, because he thinks the survival of humanity depends on it. Hawking shared these thoughts in an afterword for Julian Guthrie's book "How to ...
But if the otherwise closed system is allowed to accept high-temperature radiant energy from an external source (e.g., sunlight) and to reject low-temperature waste heat to deep space, it can continue indefinitely. An example of such a system is the Earth itself.