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Human presence in space (also anthropogenic presence in space or humanity in space) is the direct and mediated presence or telepresence of humans in outer space [1] and in a broader sense also on any extraterrestrial astronomical body.
Astrosociology, sociology of outer space, or sociology of the universe [1] is the study of the relationship between outer space, extraterrestrial places, and the wider universe and society. It is an interdisciplinary study between space-related sciences and sociology that seeks to understand the impact of human society outside our current ...
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 ]
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.
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]
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 ...
Deep space is defined by the United States government as all of outer space which lies further from Earth than a typical low-Earth-orbit, thus assigning the Moon to deep-space. [117] Other definitions vary the starting point of deep-space from, "That which lies beyond the orbit of the moon," to "That which lies beyond the farthest reaches of ...