Context: In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a planet about a star or a natural satellite around a planet. Normally, orbit refers to a regularly repeating path around a body, although it may occasionally be used for a non recurring trajectory or a path around a point in space. To a close approximation, planets and satellites follow elliptical orbits, with the central mass being orbited at a focal point of the ellipse, as described by Kepler's laws of planetary motion., Anti-gravity is an idea of creating a place or object that is free from the force of gravity. It does not refer to the lack of weight under gravity experienced in free fall or orbit, or to balancing the force of gravity with some other force, such as electromagnetism or aerodynamic lift. Anti-gravity is a recurring concept in science fiction, particularly in the context of spacecraft propulsion. Examples are the gravity blocking substance "Cavorite" in H. G. Wells' "The First Men in the Moon" and the Spindizzy machines in James Blish's "Cities in Flight"., Gravity, or gravitation, is a natural phenomenon by which all things with mass are brought toward (or "gravitate" toward) one another, including planets, stars and galaxies. Since energy and mass are equivalent, all forms of energy, including light, also cause gravitation and are under the influence of it. On Earth, gravity gives weight to physical objects and causes the ocean tides. The gravitational attraction of the original gaseous matter present in the Universe caused it to begin coalescing, forming stars  and the stars to group together into galaxies  so gravity is responsible for many of the large scale structures in the Universe. Gravity has an infinite range, although its effects become increasingly weaker on farther objects., Cities in Flight is a four-volume series of science fiction stories by American writer James Blish, originally published between 1950 and 1962, which were first known collectively as the "Okie" novels. The series features entire cities that are able to fly through space using an anti-gravity device, the spindizzy. The stories cover roughly two thousand years, from their very near future to the end of the universe. One story, "Earthman, Come Home" won a Retro Hugo Award in 2004 for Best Novelette. Since 1970, the primary edition has been the omnibus volume first published in paperback by Avon Books. Over the years James Blish made many changes to these stories in response to points raised in letters from readers., In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it. In the context of general relativity, where gravitation is reduced to a space-time curvature, a body in free fall has no force acting on it and moves along a geodesic. The present article only concerns itself with free fall in the Newtonian domain., Abandoning previous ventures in favor of toys in the 1960s, Nintendo then developed into a video game company in the 1970s, ultimately becoming one of the most influential in the industry and Japan's third most-valuable company with a market value of over $85 billion. From 1992 until 2016, Nintendo was also the majority shareholder of Major League Baseball's Seattle Mariners., Herbert George "H. G." Wells (21 September 1866  13 August 1946) was an English writer. He was prolific in many genres, including the novel, history, politics, social commentary, and textbooks and rules for war games. Wells is now best remembered for his science fiction novels and is called a "father of science fiction", along with Jules Verne and Hugo Gernsback. His most notable science fiction works include "The Time Machine" (1895), "The Island of Doctor Moreau" (1896), "The Invisible Man" (1897), and "The War of the Worlds" (1898). He was nominated for the Nobel Prize in Literature four times., Spacecraft propulsion is any method used to accelerate spacecraft and artificial satellites. There are many different methods. Each method has drawbacks and advantages, and spacecraft propulsion is an active area of research. However, most spacecraft today are propelled by forcing a gas from the back/rear of the vehicle at very high speed through a supersonic de Laval nozzle. This sort of engine is called a rocket engine., Sony Corporation is the electronics business unit and the parent company of the Sony Group, which is engaged in business through its four operating components  electronics (video games, network services and medical business), motion pictures, music and financial services. These make Sony one of the most comprehensive entertainment companies in the world. Sony's principal business operations include Sony Corporation, Sony Pictures Entertainment, Sony Interactive Entertainment, Sony Music Entertainment, Sony Mobile (formerly Sony Ericsson) and Sony Financial. Sony is among the Semiconductor sales leaders by year and as of 2013, the fourth-largest television manufacturer in the world, after Samsung Electronics, LG Electronics and TCL., The PAL region (PAL being short for Phase Alternating Line) is a television publication territory that covers most of Asia, Africa, Europe, South America and Oceania. It is so named because of the PAL television standard traditionally used in those regions, as opposed to the NTSC standard traditionally used in Japan and nearly all of North America., A video game console is an electronic, digital or computer device that outputs a video signal or visual image to display a video game that one or more people can play., The is a home video game console released by Nintendo in Japan on September 14, 2001; in North America on November 18, 2001; in Europe on May 3, 2002; and in Australia on May 17, 2002. The sixth-generation console is the successor to the Nintendo 64 and competed with Sony Computer Entertainment's PlayStation 2 and Microsoft's Xbox., The original console in the series was the first video game console to ship 100 million units, 9 years and 6 months after its initial launch. Its successor, the PlayStation 2, was released in 2000. The PlayStation 2 is the best-selling home console to date, having reached over 155 million units sold as of December 28, 2012. Sony's next console, the PlayStation 3, was released in 2006 and has sold over 80 million consoles worldwide as of November 2013. Sony's latest console, the PlayStation 4, was released in 2013, selling 1 million consoles in its first 24 hours on sale, becoming the fastest selling console in history., North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere. It can also be considered a northern subcontinent of the Americas. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the west and south by the Pacific Ocean, and to the southeast by South America and the Caribbean Sea., The PlayStation Portable (PSP) is a handheld game console developed by Sony. Development of the console was announced during E3 2003, and it was unveiled on , 2004, at a Sony press conference before E3 2004. The system was released in Japan on , 2004, in North America on , 2005, and in the PAL region on , 2005. It primarily competed with the Nintendo DS, as part of the seventh generation of video games., The First Men in the Moon is a scientific romance published in 1901 by the English author H. G. Wells, who called it one of his "fantastic stories". The novel tells the story of a journey to the moon undertaken by the two protagonists, a businessman narrator, Mr. Bedford, and an eccentric scientist, Mr. Cavor. Bedford and Cavor discover that the moon is inhabited by a sophisticated extraterrestrial civilization of insect-like creatures they call "Selenites"., Australia, officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands. It is the world's sixth-largest country by total area. The neighbouring countries are Papua New Guinea, Indonesia and East Timor to the north; the Solomon Islands and Vanuatu to the north-east; and New Zealand to the south-east. Australia's capital is Canberra, and its largest urban area is Sydney., A video game is an electronic game that involves human or animal interaction with a user interface to generate visual feedback on a video device such as a TV screen or computer monitor. The word "video" in "video game" traditionally referred to a raster display device, but as of the 2000s, it implies any type of display device that can produce two- or three-dimensional images. Some theorists categorize video games as an art form, but this designation is controversial., The or simply, DS, is a 32-bit dual-screen handheld game console developed and released by Nintendo. The device went on sale in North America on November 21, 2004. The DS, short for "Developers' System" or "Dual Screen", introduced distinctive new features to handheld gaming: two LCD screens working in tandem (the bottom one featuring a touchscreen), a built-in microphone, and support for wireless connectivity. Both screens are encompassed within a clamshell design similar to the Game Boy Advance SP. The Nintendo DS also features the ability for multiple DS consoles to directly interact with each other over Wi-Fi within a short range without the need to connect to an existing wireless network. Alternatively, they could interact online using the now-closed Nintendo Wi-Fi Connection service. Its main competitor was Sony's PlayStation Portable as part of the seventh generation era., The is a home video game console released by Sega on November 27, 1998 in Japan, September 9, 1999 in North America, and October 14, 1999 in Europe. It was the first in the sixth generation of video game consoles, preceding Sony's PlayStation 2, Nintendo's GameCube and Microsoft's Xbox. The Dreamcast was Sega's final home console, marking the end of the company's 18 years in the console market., Wipeout Pulse is a racing game , developed by SCE Studio Liverpool for the Sony PlayStation Portable , sequel to Wipeout Pure . The game was officially announced on 27 March 2007 and was released on 14 December 2007 in Europe . A PlayStation 2 port was released on 24 June 2009 in Europe . The game is set in the year 2207 . Players take part in the FX400 Anti-Gravity Racing League , competing in various types of race at several race courses set around the world ., The Dillon-Wagoner Graviton Polarity Generator, known colloquially as the spindizzy, is a fictitious anti-gravity device imagined by James Blish for his series "Cities in Flight". This device grows more efficient with the amount of mass being lifted, which was used as the hook for the storiesit was more effective to lift an entire city than it was to lift something smaller, such as a classic spaceship. This is taken to extremes in the final stories, where an entire planet is used to cross the galaxy in a matter of hours using the spindizzy drive., Microsoft Corporation (commonly referred to as Microsoft or MS) is an American multinational technology company headquartered in Redmond, Washington, that develops, manufactures, licenses, supports and sells computer software, consumer electronics and personal computers and services. Its best known software products are the Microsoft Windows line of operating systems, Microsoft Office office suite, and Internet Explorer and Edge web browsers. Its flagship hardware products are the Xbox video game consoles and the Microsoft Surface tablet lineup. As of 2016, it was the world's largest software maker by revenue, and one of the world's most valuable companies., Wipeout 2097 (stylised wipE'out"297; released as Wipeout XL in North America) is a 1996 futuristic racing game developed and published by Psygnosis. It is the second instalment released in the "Wipeout series", and is the direct sequel of the original game released the previous year. It was originally released in 1996 for the PlayStation and Microsoft Windows, and in 1997 for the Sega Saturn. It was later ported by Digital Images to the Amiga in 1999 and by Coderus to Mac OS in 2002., Wipeout Pure (stylised as wipE'out pre) is a futuristic racing video game developed by Sony Studio Liverpool and published by Sony Computer Entertainment for the PlayStation Portable. It was first released on 24 March 2005 in North America, on 7 April 2005 in Japan and on 1 September 2005 in Europe. It is the sixth instalment of the "Wipeout" series and was released simultaneously with the launch of the PlayStation Portable. The game takes place in the year 2197, exactly 100 years after "Wipeout 2097", and revolves around players competing in the FX300 anti-gravity racing league., The PlayStation 2 (abbreviated as PS2) is a home video game console that was developed by Sony Computer Entertainment. It is the successor to the PlayStation, and is the second installment in the PlayStation lineup of consoles. It was released on March 4, 2000 in Japan, October 26, 2000 in North America, November 24, 2000 in Europe, and November 17, 2000 in Australia. It competed with Sega's Dreamcast, Microsoft's Xbox, and Nintendo's GameCube in the sixth generation of video game consoles., A handheld game console is a small, portable self-contained video game console with a built-in screen, game controls, and speakers. Handheld game consoles are smaller than home video game consoles and contain the console, screen, speakers, and controls in one unit, allowing people to carry them and play them at any time or place., In the history of video games, the sixth-generation era (sometimes referred to as the 128-bit era; see "Bits and system power" below) refers to the computer and video games, video game consoles, and video game handhelds available at the turn of the 21st century which was from 1998 to 2008. Platforms of the sixth generation include the Sega Dreamcast, Sony PlayStation 2, Nintendo GameCube, and Microsoft Xbox. This era began on November 27, 1998 with the Japanese release of the Dreamcast, and it was joined by the PlayStation 2 in March 2000 and the GameCube and Xbox in 2001. The Dreamcast was discontinued in 2001, the GameCube in 2007, Xbox in 2009 and PlayStation 2 in 2013. Though the seventh generation of consoles started in November 2005 with the launch of the Xbox 360, the sixth generation did not end until January 2013, when Sony announced that the PlayStation 2 had been discontinued worldwide., Subject: wipeout pulse, Relation: genre, Options: (A) animal (B) art (C) country (D) design (E) fiction (F) flight (G) game (H) history (I) james (J) japanese (K) march (L) mass (M) music (N) novel (O) novelette (P) physics (Q) racing (R) racing video game (S) research (T) romance (U) science (V) scientific romance (W) sequel (X) space (Y) technology (Z) television ([) urban (\) video (]) war (^) western
Output: racing video game