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Mining The Sky
''Mining the Sky: Untold Riches from the Asteroids, Comets, and Planets'' is a 1997 book by University of Arizona Planetary Sciences professor emeritus John S. Lewis that describes possible routes for accessing extraterrestrial resources, either for use on Earth or for enabling space colonization. Each issue or proposal is evaluated for its effects on humanity, physics and economic feasibility based on planetary science. For instance, Chapter 5 ("Asteroids and Comets in our Backyard") exhaustively catalogs the types of near-Earth objects (asteroids and extinct comets whose orbits intersect Earth's), assessing both the harms likely from possible collisions with Earth (the subject of Prof. Lewis's previous book, ''Rain of Iron and Ice'') on the one hand, and their potential for profitable exploitation on the other. To illustrate this potential, Lewis includes an order-of-magnitude estimate of the economic value of the ''smallest'' known metallic (''M-type'') near-Earth asteroid: 355 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John S
John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Second Epistle of John, often shortened to 2 John * Third Epistle of John, often shortened to 3 John People * John the Baptist (died ), regarded as a prophet and the forerunner of Jesus Christ * John the Apostle (died ), one of the twelve apostles of Jesus Christ * John the Evangelist, assigned author of the Fourth Gospel, once identified with the Apostle * John of Patmos, also known as John the Divine or John the Revelator, the author of the Book of Revelation, once identified with the Apostle * John the Presbyter, a figure either identified with or distinguished from the Apostle, the Evangelist and John of Patmos Other people with the given name Religious figures * John, father of Andrew the Apostle and Saint Peter * Pope John (disambigu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space-based Solar Power
Space-based solar power (SBSP or SSP) is the concept of collecting solar power in outer space with solar power satellites (SPS) and distributing it to Earth. Its advantages include a higher collection of energy due to the lack of reflection and absorption by the atmosphere, the possibility of very little night, and a better ability to orient to face the Sun. Space-based solar power systems convert sunlight to some other form of energy (such as microwaves) which can be transmitted through the atmosphere to receivers on the Earth's surface. Solar panels on spacecraft have been in use since 1958, when Vanguard I used them to power one of its radio transmitters; however, the term (and acronyms) above are generally used in the context of large-scale transmission of energy for use on Earth. Various SBSP proposals have been researched since the early 1970s, but none is economically viable with the space launch costs. Some technologists propose lowering launch costs with space m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Colonization
Space colonization (or extraterrestrial colonization) is the human settlement, settlement or colonization of outer space and astronomical bodies. The concept in its broad sense has been applied to any permanent human presence in space, such as a space habitat or other extraterrestrial settlements. It may involve a process of occupation or control for exploitation, such as Space mining, extraterrestrial mining. Making territorial claims in space is prohibited by international space law, defining space as a Common heritage of humanity, common heritage. International space law has had the goal to prevent colonial claims and militarization of space, and has advocated the installation of international regimes to regulate access to and sharing of space, particularly for specific locations such as the limited space of Geostationary orbit#Orbital allocation, geostationary orbit or the Moon. To date, no permanent space settlement other than temporary Space habitat (facility), space ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Outline Of Space Technology
Space technology is technology for use in outer space. Space technology includes space vehicles such as spacecraft, satellites, space stations and orbital launch vehicles; deep-space communication; in-space propulsion; and a wide variety of other technologies including support infrastructure equipment, and procedures. Many common everyday services for terrestrial use such as weather forecasting, remote sensing, satellite navigation systems, satellite television, and some long-distance communications systems critically rely on space infrastructure. Of the sciences, astronomy and Earth science benefit from space technology. New technologies originating with or accelerated by space-related endeavors are often subsequently exploited in other economic activities. History of space technology The first country on Earth to put any technology into space was the Soviet Union. The Soviet Union sent the Sputnik 1 satellite on October 4, 1957. It weighed about , and is believed to ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Advocacy
Space advocacy is supporting or advocating human activity in outer space. The advocated purposes range from orbital flight, space exploration, commercialization of space and space settlement, to outright space colonization. There are many different individuals and organizations dedicated to space advocacy. They are usually active in educating the public on space-related subjects, lobbying governments for increased funding in space-related activities or supporting private space activities. They also recruit members, fund projects, and provide information for their membership and interested visitors. They are sub-divided into three categories depending on their primary work: practice, advocacy, and theory. History The idea that space flight was possible and necessary was introduced by groups of thinkers, primarily members of the Russian, American, British, and German science communities, who formed in the 1920s the first advocacy groups. Starting in the 1930s, these groups b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Colonies In Space
Humans (''Homo sapiens'') or modern humans are the most common and widespread species of primate, and the last surviving species of the genus ''Homo''. They are great apes characterized by their hairlessness, bipedalism, and high intelligence. Humans have large brains, enabling more advanced cognitive skills that facilitate successful adaptation to varied environments, development of sophisticated tools, and formation of complex social structures and civilizations. Humans are highly social, with individual humans tending to belong to a multi-layered network of distinct social groups — from families and peer groups to corporations and political states. As such, social interactions between humans have established a wide variety of values, social norms, languages, and traditions (collectively termed institutions), each of which bolsters human society. Humans are also highly curious: the desire to understand and influence phenomena has motivated humanity's development of s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
