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Interstellar War
An interstellar war is a hypothetical space war between combatants from different planetary systems. The concept provides a common plot device in science fiction, especially in the space opera subgenre. In contrast, the term ''intergalactic war'' refers to war between combatants from different galaxies, and ''interplanetary war'' refers to war between combatants from different planets of the same planetary system. Likelihood Michael H. Hart argued that if humans ever spread to other planetary systems, the actual likelihood of interstellar war would be low due to the immense distances (and hence travel times involved)—interstellar war would require a vastly greater investment of time and resources than present-day intraplanetary wars involve. By contrast, Robert Freitas argued that the energy expenditure required for interstellar war would be trivial from the viewpoint of a Type II or Type III civilisation on the Kardashev scale. Interstellar war in fiction The earlie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Warfare
Space warfare is combat in which one or more belligerents are in outer space. The scope of space warfare includes ''ground-to-space warfare'', such as attacking satellites from the Earth; ''space-to-space warfare'', such as satellites attacking satellites; and ''space-to-ground warfare'', such as satellites attacking Earth-based targets. There exist international treaties, which are in place to attempt to regulate conflicts in space and limit the installation of space weapon systems, especially nuclear weapons. On October 31, 2023, during a Yemeni missile strike on Israel, Israel's Arrow 2 system intercepted a ballistic missile launched from Yemen by Houthi rebels; this successful interception occurred outside of Earth's atmosphere thus making it the first recorded practical instance of space warfare during an active conflict. On April 14, 2024, Iran launched more than 120 ballistic missiles at Israel, making it the first large-scale incident in which a space weapon was u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larry Niven
Laurence van Cott Niven (; born April 30, 1938) is an American science fiction writer. His 1970 novel ''Ringworld'' won the Hugo Award for Best Novel, Hugo, Locus Award, Locus, Ditmar Award, Ditmar, and Nebula Award for Best Novel, Nebula awards. With Jerry Pournelle he wrote ''The Mote in God's Eye'' (1974) and ''Lucifer's Hammer'' (1977). The Science Fiction and Fantasy Writers of America gave him the 2015 Damon Knight Memorial Grand Master Award. His work is primarily hard science fiction, using big science concepts and theoretical physics. It also often includes elements of detective fiction and Adventure novel, adventure stories. His fantasy includes the series ''The Magic Goes Away'', works of rational fantasy dealing with magic as a non-renewable resource. Biography Niven was born in Los Angeles. He is a great-grandson of Edward L. Doheny, an oil tycoon who drilled the first successful well in the Los Angeles City Oil Field in 1892, and also was subsequently implicat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science Fiction Genres
Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. Modern science is typically divided into twoor threemajor branches: the natural sciences, which study the physical world, and the social sciences, which study individuals and societies. While referred to as the formal sciences, the study of logic, mathematics, and theoretical computer science are typically regarded as separate because they rely on deductive reasoning instead of the scientific method as their main methodology. Meanwhile, applied sciences are disciplines that use scientific knowledge for practical purposes, such as engineering and medicine. The history of science spans the majority of the historical record, with the earliest identifiable predecessors to modern science dating to the Bronze Age in Egypt and Mesopotamia (). Their contributions to mathematics, astronomy, and medicine entered and shaped the Greek natural philo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acta Astronautica
''Acta Astronautica'' is a monthly peer-reviewed scientific journal covering all fields of physical, engineering, life, and social sciences related to the peaceful scientific exploration of space. The journal is widely known as one of the top aerospace engineering journals. The journal was established in 1955 under the name ''Astronautica Acta'', obtaining its current title in 1974, with volume-numbering simultaneously restarting at 1. The journal is published by Elsevier, sponsored by the International Academy of Astronautics. Abstracting and indexing The journal is abstracted and indexed in: According to the ''Journal Citation Reports'', the journal has a 2020 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a type of journal ranking. Journals with higher impact factor values are considered more prestigious or important within their field. The Impact Factor of a journa ... of 2.413. References External links * Space scien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Militarisation Of Space
The militarisation of space involved the placement and development of weaponry and military technology in outer space. The early exploration of space in the mid-20th century had, in part, a military motivation, as the United States and the Soviet Union used it as an opportunity to demonstrate ballistic-missile technology and other technologies having the potential for military application. Outer space has since been used as an operating location for military satellite, military spacecraft such as imaging satellite, imaging and communications satellites, and some ballistic missiles pass through outer space during their flight. , known deployments of weapons stationed in space include only the Almaz#Defense measures, Almaz space-station armament and pistols such as the TP-82 Cosmonaut survival pistol (for post-landing, pre-recovery use). History The Cold War During the Cold War, the world's two great superpowers—the Soviet Union and the United States, United States of America ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reginald Bretnor
Reginald Bretnor (born Alfred Reginald Kahn; July 30, 1911 – July 22, 1992) was an American science fiction editor and author, and contributor on warfare and other subjects, who published substantial work between the 1950s and 1980s. Bretnor worked extensively both to write science fiction and to edit science and science fiction-related compendia (e.g., his trilogy of symposia beginning with ''Science Fiction Today and Tomorrow: A Discursive Symposium'' (1975), and he edited some of the earliest books to consider science fiction from the perspective of literary theory and criticism. His non-fiction included works on military history, theory, and futurology (e.g., his trilogy on ''The Future of War'', beginning 1979), as well as on public affairs. Most of Bretnor's own fiction, science fiction and otherwise, was in short story form, and often featured whimsical story lines or ironic plot twists. Early life and education Reginald Bretnor was born on July 30, 1911, in Vladivostok ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ace Books
Ace Books is a publisher of science fiction (SF) and fantasy books founded in New York City in 1952 by A. A. Wyn, Aaron A. Wyn. It began as a genre publisher of mystery fiction, mysteries and western (genre), westerns, and soon branched out into other genres, publishing its first science fiction title in 1953. This was successful, and science fiction titles outnumbered both mysteries and westerns within a few years. Other genres also made an appearance, including nonfiction, Gothic fiction, gothic novels, media tie-in novelizations, and romance novel, romances. Ace became known for the ''dos-à-dos binding#Tête-bêche, tête-bêche'' binding format used for many of its early books, although it did not originate the format. Most of the early titles were published in this "Ace Double" format, and Ace continued to issue books in varied genres, bound ''tête-bêche'', until 1973. Ace, along with Ballantine Books, was one of the leading science fiction publishers for its first ten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Faster-than-light
Faster-than-light (superluminal or supercausal) travel and communication are the conjectural propagation of matter or information faster than the speed of light in vacuum (). The special theory of relativity implies that only particles with zero rest mass (i.e., photons) may travel ''at'' the speed of light, and that nothing may travel faster. Particles whose speed exceeds that of light ( tachyons) have been hypothesized, but their existence would violate causality and would imply time travel. The scientific consensus is that they do not exist. According to all observations and current scientific theories, matter travels at slower-than-light (subluminal) speed with respect to the locally distorted spacetime region. Speculative faster-than-light concepts include the Alcubierre drive, Krasnikov tubes, traversable wormholes, and quantum tunneling. Some of these proposals find loopholes around general relativity, such as by expanding or contracting space to make the object ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar System
The Solar SystemCapitalization of the name varies. The International Astronomical Union, the authoritative body regarding astronomical nomenclature, specifies capitalizing the names of all individual astronomical objects but uses mixed "Solar System" and "solar system" structures in theinaming guidelines document. The name is commonly rendered in lower case ('solar system'), as, for example, in the ''Oxford English Dictionary'' an''Merriam-Webster's 11th Collegiate Dictionary''. is the gravitationally bound Planetary system, system of the Sun and the objects that orbit it. It Formation and evolution of the Solar System, formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc. The Sun is a typical star that maintains a hydrostatic equilibrium, balanced equilibrium by the thermonuclear fusion, fusion of hydrogen into helium at its stellar core, core, releasing this energy from its outer photosphere. As ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Outer Planets
The Solar SystemCapitalization of the name varies. The International Astronomical Union, the authoritative body regarding astronomical nomenclature, specifies capitalizing the names of all individual astronomical objects but uses mixed "Solar System" and "solar system" structures in theinaming guidelines document. The name is commonly rendered in lower case ('solar system'), as, for example, in the ''Oxford English Dictionary'' an''Merriam-Webster's 11th Collegiate Dictionary''. is the gravitationally bound system of the Sun and the objects that orbit it. It formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc. The Sun is a typical star that maintains a balanced equilibrium by the fusion of hydrogen into helium at its core, releasing this energy from its outer photosphere. Astronomers classify it as a G-type main-sequence star. The largest objects that orbit the Sun are the eight planet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroid Belt
The asteroid belt is a torus-shaped region in the Solar System, centered on the Sun and roughly spanning the space between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies called asteroids or minor planets. The identified objects are of many sizes, but much smaller than planets, and, on average, are about one million kilometers (or six hundred thousand miles) apart. This asteroid belt is also called the main asteroid belt or main belt to distinguish it from other asteroid populations in the Solar System. The asteroid belt is the smallest and innermost circumstellar disc in the Solar System. Classes of Small Solar System body, small Solar System bodies in other regions are the near-Earth objects, the Centaur (minor planet), centaurs, the Kuiper belt objects, the scattered disc objects, the sednoids, and the Oort cloud objects. About 60% of the main belt mass is contained in the four largest asteroids: Ceres (dwarf planet), C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The War Of The Worlds (novel)
''The War of the Worlds'' is a science fiction novel by English author H. G. Wells. It was written between 1895 and 1897, and serialised in ''Pearson's Magazine'' in the UK and ''Cosmopolitan'' magazine in the US in 1897. The full novel was first published in hardcover in 1898 by William Heinemann. ''The War of the Worlds'' is one of the earliest stories to detail a conflict between humankind and an extraterrestrial race. The novel is the first-person narrative of an unnamed protagonist in Surrey and his younger brother who escapes to Tillingham in Essex as London and Southern England are invaded by Martians. It is one of the most commented-on works in the science fiction canon. The plot is similar to other works of invasion literature from the same period and has been variously interpreted as a commentary on the theory of evolution, imperialism, and Victorian era fears, superstitions and prejudices. Wells later noted that inspiration for the plot was the catastrophic effe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
