Definition of outer space
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Legal and Scientific Definitions of Outer Space
The definition of outer space has been a subject of debate for many years, with no universally agreed-upon legal or scientific boundary separating it from airspace above Earth. Legally, there is still no official, internationally recognized definition of where outer space begins, which has led to challenges in space law and governance Ogunbanwo1975Housh2000. The lack of a clear boundary complicates issues such as sovereignty, liability, and the management of resources and activities in space Housh2000De O. Bittencourt Neto2021.
From a scientific perspective, some researchers have proposed specific boundaries. For example, the Kármán line at 100 kilometers above sea level is often cited as the edge of space, but some experts argue that 80 kilometers may be a more appropriate boundary based on physical and technological considerations . These differing viewpoints highlight the ongoing debate about where Earth's atmosphere ends and outer space begins Ogunbanwo1975McDowell2018.
Conceptual and Cultural Understandings of Outer Space
Outer space is often understood as the vast, seemingly infinite region beyond Earth's atmosphere, encompassing the universe outside our planet Santina2013Arnheim2017. This concept is not only scientific but also cultural and psychological, shaped by how humans visualize and imagine the cosmos Santina2013Arnheim2017. Artistic representations and technological advancements have made outer space more comprehensible, yet it remains an abstract and complex idea for many .
Culturally, outer space is sometimes seen as a new frontier, evoking ideas of exploration, colonization, and even resource extraction Santina20139. These perspectives influence how societies think about the possibilities and challenges of space exploration and settlement Miller20179.
Outer Space as a Global Commons
Legally and politically, outer space is often described as a global commons—an area beyond national jurisdiction that is accessible to all nations but cannot be claimed by any single country . This status is important for international cooperation and the development of space law, ensuring that the use and exploration of outer space are conducted with regard for the interests of all humanity .
Evolving Definitions and Future Considerations
As technology advances and human activities in space increase, the need for a clear and practical definition of outer space becomes more urgent Housh2000Miller2017. Some propose redefining outer space based on gravitational boundaries or the perspective of different celestial bodies, especially as discussions about space settlement and sovereignty evolve . Additionally, considering outer space as an environment—whether as a resource, a risk, or a wilderness—can help guide future policies and ethical considerations .
Conclusion
In summary, the definition of outer space remains unsettled, with ongoing debates in legal, scientific, and cultural contexts. While it is generally understood as the region beyond Earth's atmosphere, the exact boundary and its implications continue to be discussed and redefined as humanity's relationship with space evolves Ogunbanwo1975Housh2000McDowell2018+1 MORE.
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Space Settlement and the Celestial Subjectivity Model: Shifting Our Legal Perspective of the Universe
International law should redefine outer space according to the celestial subjectivity model, allowing for human settlement and ensuring self-determination in future civilizations.
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