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Black Hole Starship
In astronautics, a black hole starship is the theoretical concept of a starship capable of interstellar travel using a black hole as an energy source for spacecraft propulsion. The concept was first discussed in science fiction, notably in the book ''Imperial Earth'' by Arthur C. Clarke, and in the work of Charles Sheffield, in which energy extracted from a Kerr–Newman black hole is described as powering the rocket engines in the story "Killing Vector" (1978). In a more detailed analysis, a proposal to create an artificial black hole and using a parabolic reflector to reflect its Hawking radiation was discussed in 2009 by Louis Crane and Shawn Westmoreland.Louis Crane and Shawn Westmoreland,Are Black Hole Starships Possible (ArXiv preprint 12 Aug 2009). Retrieved 7 April 2017. Their conclusion was that it was on the edge of possibility, but that quantum gravity effects that are presently unknown will either make it easier, or make it impossible. Similar concepts were also sketc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronautics
Astronautics (or cosmonautics) is the theory and practice of travel beyond Earth's atmosphere into outer space. Spaceflight is one of its main applications and space science its overarching field. The term ''astronautics'' (originally ''astronautique'' in French) was coined in the 1920s by J.-H. Rosny, president of the Goncourt academy, in analogy with aeronautics. Because there is a degree of technical overlap between the two fields, the term aerospace is often used to describe both at once. In 1930, Robert Esnault-Pelterie published the first book on the new research field. The term ''cosmonautics'' (originally ''cosmonautique'' in French) was introduced in 1930s by Ary Sternfeld with his book ''Initiation à la Cosmonautique'' (Introduction to cosmonautics) (the book brought him the Prix REP-Hirsch, later known as the Prix d'Astronautique, of the French Astronomical Society in 1934.) As with aeronautics, the restrictions of mass, temperatures, and external forces require t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schwarzschild Radius
The Schwarzschild radius or the gravitational radius is a physical parameter in the Schwarzschild solution to Einstein's field equations that corresponds to the radius defining the event horizon of a Schwarzschild black hole. It is a characteristic radius associated with any quantity of mass. The Schwarzschild radius was named after the German astronomer Karl Schwarzschild, who calculated this exact solution for the theory of general relativity in 1916. The Schwarzschild radius is given as r_\text = \frac , where ''G'' is the gravitational constant, ''M'' is the object mass, and ''c'' is the speed of light. History In 1916, Karl Schwarzschild obtained the exact solution to Einstein's field equations for the gravitational field outside a non-rotating, spherically symmetric body with mass M (see Schwarzschild metric). The solution contained terms of the form 1-/r and \frac , which become singular at r = 0 and r=r_\text respectively. The r_\text has come to be known as the ''Schwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Event Horizon (film)
''Event Horizon'' is a 1997 science fiction horror film directed by Paul W. S. Anderson and written by Philip Eisner. It stars Laurence Fishburne, Sam Neill, Kathleen Quinlan and Joely Richardson. Set in 2047, it follows a crew of astronauts sent on a rescue mission after a missing spaceship, the ''Event Horizon'', spontaneously appears in orbit around Neptune, only to discover that a sinister force has come back with it. The film had a troubled production, with filming and editing rushed by Paramount when it became clear that ''Titanic'' would not meet its projected release. The original 130-minute cut of the film was heavily edited by the studio's demand, to Anderson's consternation. On release, the film was a commercial and critical failure, grossing $42 million on a $60 million production budget. However, it began to sell well on home video; its initial DVD release sold so well that Paramount contacted Anderson to begin working on a restoration of the deleted footage, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul W
Paul may refer to: *Paul (given name), a given name (includes a list of people with that name) *Paul (surname), a list of people People Christianity *Paul the Apostle (AD c.5–c.64/65), also known as Saul of Tarsus or Saint Paul, early Christian missionary and writer *Pope Paul (other), multiple Popes of the Roman Catholic Church *Saint Paul (other), multiple other people and locations named "Saint Paul" Roman and Byzantine empire *Lucius Aemilius Paullus Macedonicus (c. 229 BC – 160 BC), Roman general *Julius Paulus Prudentissimus (), Roman jurist *Paulus Catena (died 362), Roman notary *Paulus Alexandrinus (4th century), Hellenistic astrologer *Paul of Aegina or Paulus Aegineta (625–690), Greek surgeon Royals *Paul I of Russia (1754–1801), Tsar of Russia *Paul of Greece (1901–1964), King of Greece Other people *Paul the Deacon or Paulus Diaconus (c. 720 – c. 799), Italian Benedictine monk *Paul (father of Maurice), the father of Maurice, Byzan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantum Singularity
The term quantum singularity is used to refer to many different phenomena in fiction. They often only approximate a gravitational singularity in the scientific sense in that they are massive, localized distortions of space and time. The name invokes one of the most fundamental problems remaining in modern physics: the difficulty in uniting Einstein's theory of relativity, which includes singularities within its models of black holes, and quantum mechanics. In fact, since according to relativity, singularities, by definition, are infinitely small, and expected to be quantum mechanical by nature, a theory of quantum gravity would be required to describe their behaviour. No such theory has yet been formulated. ''Star Trek'' A Star Trek quantum singularity is a phenomenon of multiple varieties. One such variety appears in the '' Star Trek: Voyager'' episode "Parallax" which creates a mirror image along with a temporal distortion. Voyager flies into the singularity after seeing an image o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Romulan
The Romulans () are an extraterrestrial race in the American science fiction franchise ''Star Trek''. They first appeared in the series ''Star Trek'' (1966–1969). They have appeared in most subsequent ''Star Trek'' releases, including '' The Animated Series'', ''The Next Generation'', ''Deep Space Nine'', '' Voyager'', ''Enterprise'', ''Discovery'', '' Picard'', '' Strange New Worlds'', and '' Lower Decks''. They appear in the ''Star Trek'' feature films '' Star Trek V: The Final Frontier'' (1989), '' Star Trek VI: The Undiscovered Country'' (1991), '' Star Trek: Nemesis'' (2002) and ''Star Trek'' (2009). They also appear in various other spin-off media, including books, comics, toys and games. Writer Paul Schneider created the Romulans for the 1966 ''Star Trek'' episode " Balance of Terror". As a basis, he considered what the ancient Roman Empire might have looked like had it developed to the point of spaceflight. Physically, the Romulans were presented as humanoid, but the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Star Trek
''Star Trek'' is an American science fiction media franchise created by Gene Roddenberry, which began with the eponymous 1960s television series and quickly became a worldwide pop-culture phenomenon. The franchise has expanded into various films, television series, video games, novels, and comic books. With an estimated $10.6 billion in revenue, it is one of the most recognizable and highest-grossing media franchises of all time. The franchise began with ''Star Trek: The Original Series'', which debuted in the US on September 8, 1966 and aired for three seasons on NBC. It was first broadcast on September 6, 1966 on Canada's CTV network. It followed the voyages of the crew of the starship USS ''Enterprise'', a space exploration vessel built by the United Federation of Planets in the 23rd century, on a mission "to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before". In creating ''Star Trek'', Roddenberry w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Causal Angel
''The Causal Angel'' is the third science fiction novel by Hannu Rajaniemi featuring the protagonist Jean le Flambeur. It was published in July 2014 by Gollancz in the UK and by Tor in the US. The novel is the finale of a trilogy. The previous novels in the series are ''The Quantum Thief'' (2010) and '' The Fractal Prince'' (2012). Synopsis After the events of ''The Fractal Prince'', Jean le Flambeur and Mieli are separated and their sentient spacecraft Perhonen is destroyed. The two protagonists, each in their own way, struggle to decide where their loyalties lie and how to proceed in the catastrophically altered situation. Meanwhile, the Solar System is plummeting into an all-out war of unprecedented scale and consequence. The most powerful factions, the Sobornost and the Zoku, are gathering their forces and making their plays, while simultaneously being torn apart by internal strifes. See also * List of characters in the Jean le Flambeur series This is a list of character ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hannu Rajaniemi
Hannu Rajaniemi (born 9 March 1978) is a Finnish American author of science fiction and fantasy, who writes in both English and Finnish. He lives in Oakland, California, and was a founding director of a commercial research organisation ThinkTank Maths. Early life Rajaniemi was born in Ylivieska, Finland in 1978. He holds a BSc in Mathematics from the University of Oulu, a Certificate of Advanced Study in Mathematics from the University of Cambridge and a PhD in Mathematical Physics from the University of Edinburgh. Prior to starting his PhD candidature, he completed his national service as a research scientist for the Finnish Defence Forces. While pursuing his PhD in Edinburgh, Rajaniemi joined Writers' Bloc, a writers' group in Edinburgh that organizes semi-regular spoken word performances and counts Charlie Stross amongst its members. Career Early works included his first published short story "Shibuya no Love" in 2003 and his short story "Deus Ex Homine" in Nova Scotia, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Watts (author)
Peter Watts (born January 25, 1958) is a Canadian science fiction author. He specializes in hard science fiction. He earned a Ph.D from the University of British Columbia in Vancouver, British Columbia in 1991, from the Department of Zoology and Resource Ecology. He went on to hold several academic research and teaching positions, and worked as a marine-mammal biologist. He began publishing fiction around the time he finished graduate school. Career His first novel ''Starfish'' (1999) reintroduced Lenie Clarke from his short story, "A Niche" (1990); Clarke is a deep-ocean power station worker physically altered for underwater living and the main character in the sequels: ''Maelstrom'' (2001), ''βehemoth: β-Max'' (2004) and ''βehemoth: Seppuku'' (2005). The last two volumes constitute one novel, but were published separately for commercial reasons. ''Starfish'', ''Maelstrom'', and ''βehemoth'' make up a trilogy usually referred to as "Rifters" after the modified humans de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Troy University
Troy University is a public university in Troy, Alabama. It was founded in 1887 as Troy State Normal School within the Alabama State University System, and is now the flagship university of the Troy University System. Troy University is accredited by the Southern Association of Colleges and Schools Commission on Colleges (SACS) to award associate, baccalaureate, master's, education specialist, and doctoral degrees. In August 2005, Troy State University, Montgomery; Troy State University, Phenix City; Troy State University, Dothan; and Troy State University (main campus) all merged under one accreditation to become Troy University. Prior to the merger, each campus was independently accredited. The merger combined staff, faculty, and administrators into a single university. Today, the university serves the educational needs of students in four Alabama campuses and 60 teaching sites in 17 U.S. states and 11 countries. Troy University has over 100,000 alumni in 50 states of the U. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pair Production
Pair production is the creation of a subatomic particle and its antiparticle from a neutral boson. Examples include creating an electron and a positron, a muon and an antimuon, or a proton and an antiproton. Pair production often refers specifically to a photon creating an electron–positron pair near a nucleus. As energy must be conserved, for pair production to occur, the incoming energy of the photon must be above a threshold of at least the total rest mass energy of the two particles created. (As the electron is the lightest, hence, lowest mass/energy, elementary particle, it requires the least energetic photons of all possible pair-production processes.) Conservation of energy and momentum are the principal constraints on the process. All other conserved quantum numbers (angular momentum, electric charge, lepton number) of the produced particles must sum to zero thus the created particles shall have opposite values of each other. For instance, if one particle has electric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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