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Rendezvous With Rama
''Rendezvous with Rama'' is a science fiction novel by British writer Arthur C. Clarke first published in 1973. Set in the 2130s, the story involves a cylindrical alien starship that enters the Solar System. The story is told from the point of view of a group of human explorers who intercept the ship in an attempt to unlock its mysteries. The novel won both the Hugo and Nebula awards upon its release, and is regarded as one of the cornerstones in Clarke's bibliography. The concept was later extended with several sequels, written by Clarke and Gentry Lee. Plot After an asteroid falls in Northeast Italy on 11 September 2077, creating a major disaster, the government of Earth sets up the Spaceguard system as an early warning of arrivals from deep space. The "Rama" of the title is an alien starship weighing at least ten trillion tons, initially mistaken for an asteroid categorised as "31/439". It is detected by astronomers in the year 2131 while it is still outside the orb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthur C
Arthur is a common male given name of Brythonic origin. Its popularity derives from it being the name of the legendary hero King Arthur. The etymology is disputed. It may derive from the Celtic ''Artos'' meaning “Bear”. Another theory, more widely believed, is that the name is derived from the Roman clan '' Artorius'' who lived in Roman Britain for centuries. A common spelling variant used in many Slavic, Romance, and Germanic languages is Artur. In Spanish and Italian it is Arturo. Etymology The earliest datable attestation of the name Arthur is in the early 9th century Welsh-Latin text ''Historia Brittonum'', where it refers to a circa 5th to 6th-century Briton general who fought against the invading Saxons, and who later gave rise to the famous King Arthur of medieval legend and literature. A possible earlier mention of the same man is to be found in the epic Welsh poem ''Y Gododdin'' by Aneirin, which some scholars assign to the late 6th century, though this is still a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northeast Italy
Northeast Italy ( it, Italia nord-orientale or just ) is one of the five official statistical regions of Italy used by the National Institute of Statistics (ISTAT), a first level NUTS region and a European Parliament constituency. Northeast encompasses four of the country's 20 regions: *Emilia-Romagna *Friuli-Venezia Giulia *Trentino-Alto Adige/Südtirol *Veneto Culturally and historically, Emilia-Romagna is part of Northwest Italy, but is included in Northeast Italy for statistical reasons. Culture Italian is the main language. Other languages include Venetian, widely spoken in Veneto and along the coast to Trieste and Istria, as well as in the towns of Pordenone and Gorizia in Friuli, and in most of Trentino, but only recognised by the Veneto region; Friulian, spoken in most of Friuli and nationally recognized, and Ladin, spoken by a few thousand people in the Dolomites. Other languages are German, the primary language of South Tyrol, where Italian is spoken by about t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biorobot
Biorobotics is an interdisciplinary science that combines the fields of biomedical engineering, cybernetics, and robotics to develop new technologies that integrate biology with mechanical systems to develop more efficient communication, alter genetic information, and create machines that imitate biological systems. Cybernetics Cybernetics focuses on the communication and system of living organisms and machines that can be applied and combined with multiple fields of study such as biology, mathematics, computer science, engineering, and much more. This discipline falls under the branch of biorobotics because of its combined field of study between biological bodies and mechanical systems. Studying these two systems allow for advanced analysis on the functions and processes of each system as well as the interactions between them. History Cybernetic theory is a concept that has existed for centuries, dating back to the era of Plato where he applied the term to refer to the "go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drogue Parachute
A drogue parachute is a parachute designed for deployment from a rapidly-moving object. It can be used for various purposes, such as to decrease speed, to provide control and stability, or as a pilot parachute to deploy a larger parachute. Vehicles that have used drogue parachutes include multi-stage parachutes, aircraft, and spacecraft recovery systems. The drogue parachute was invented by the Russian professor and parachute specialist Gleb Kotelnikov in 1912, who also invented the knapsack parachute. The Soviet Union introduced its first aircraft fitted with drogue parachutes during the mid 1930s; use of the technology expanded during and after the Second World War. A large number of jet-powered aircraft have been furnished with drogue parachutes, including the Boeing B-52 Stratofortress strategic bomber and the Eurofighter Typhoon multirole aircraft; they were also commonly used within crewed space vehicle recovery programmes, including Project Mercury and Project Gemi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human-powered Aircraft
A human-powered aircraft (HPA) is an aircraft belonging to the class of vehicles known as human-powered transport. Human-powered aircraft have been successfully flown over considerable distances. However, they are still primarily constructed as engineering challenges rather than for any kind of recreational or utilitarian purpose. History Early attempts at human-powered flight were unsuccessful because of the difficulty of achieving the high power-to-weight ratio. Prototypes often used ornithopter principles which were not only too heavy to meet this requirement but aerodynamically unsatisfactory. First attempts In 1904, Scientific American published an article and a photograph of a bicycle plane built by Steward Winslow of Riparia, Washington. He attempted to fly his plane on 30 July 1904, but one of the wheels failed. An early human-powered aircraft was the Gerhardt Cycleplane, developed by W. Frederick Gerhardt at McCook Field in Dayton, Ohio in 1923. The aircraft h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artificial World
Artificial worlds or artificial planets have been created by writers in the fields of science speculation, speculative fiction and fiction. Such megastructures could have a variety of advantages over natural planets, such as efficient use of solar energy and immense living space, but their construction and/or maintenance would require technologies so much more advanced than those of 21st-century Earth that it is currently unknown if they are even achievable. It was often stated, that it is more possible to build a 2-gigaton Dyson sphere than a laser rifle, but still ringworlds etc. are treated in sci-fi as symbol of immense power, often relic of Precursor civilization or symbol of all-powerful future empire. Examples of artificial worlds include: * Culture Orbitals *Dyson spheres * Globus Cassus *Ringworld The main plot of the Neill Blomkamp science fiction action movie Elysium focuses on a dystopian future where the poor live on a post apocalyptic Earth in ruins, working in ni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phobos (moon)
Phobos (; astronomical naming conventions, systematic designation: ) is the innermost and larger of the two moons of Mars, natural satellites of Mars, the other being Deimos (moon), Deimos. The two moons were discovered in 1877 by American astronomer Asaph Hall. It is named after Phobos (mythology), Phobos, the Greek mythology, Greek god of fear and panic, who is the son of Ares (Mars) and twin brother of Deimos (deity), Deimos. Phobos is a small, irregularly shaped object with a mean radius of . Phobos orbits from the Martian surface, closer to its Primary (astronomy), primary body than any other known Natural satellite, planetary moon. It is so close that it orbits Mars much faster than Mars rotates, and completes an orbit in just 7 hours and 39 minutes. As a result, from the surface of Mars it appears to rise in the west, move across the sky in 4 hours and 15 minutes or less, and set in the east, twice each Mars sol, Martian day. Phobos is one of the least reflective bodie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sita
Sita (; ) also called as Janaki and Vaidehi is a Hindu goddess and the female protagonist of the Hindu epic, ''Ramayana''. She is the consort of Rama, the avatar of the god Vishnu, and is regarded as a form of Vishnu's consort, Lakshmi. She is also the chief goddess of Rama-centric Hindu traditions. Sita is known for her dedication, self-sacrifice, courage, and purity. She is one of the seventeen national heroes (r''astriya bibhuti'') of Nepal. Described as the daughter of Bhūmi (the earth), Sita is brought up as the adopted daughter of King Janaka of Videha. Sita, in her youth, chooses Rama, the prince of Ayodhya as her husband in a swayamvara. After the swayamvara, she accompanies her husband to his kingdom, but later chooses to accompany her husband, along with her brother-in-law Lakshmana, in his exile. While in exile, the trio settles in the Dandaka forest from where she is abducted by Ravana, the Rakshasa king of Lanka. She is imprisoned in the garden of Ashoka Vatik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vishnu
Vishnu ( ; , ), also known as Narayana and Hari, is one of the principal deities of Hinduism. He is the supreme being within Vaishnavism, one of the major traditions within contemporary Hinduism. Vishnu is known as "The Preserver" within the Trimurti, the triple deity of supreme divinity that includes Brahma and Shiva.Gavin Flood, An Introduction to Hinduism' (1996), p. 17. In Vaishnavism, Vishnu is the supreme being who creates, protects, and transforms the universe. In the Shaktism tradition, the Goddess, or Adi Shakti, is described as the supreme Para Brahman, yet Vishnu is revered along with Shiva and Brahma. Tridevi is stated to be the energy and creative power (Shakti) of each, with Lakshmi being the equal complementary partner of Vishnu. He is one of the five equivalent deities in Panchayatana puja of the Smarta tradition of Hinduism. According to Vaishnavism, the highest form of Ishvara is with qualities (Saguna), and have certain form, but is limitless, transcend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hinduism
Hinduism () is an Indian religion or '' dharma'', a religious and universal order or way of life by which followers abide. As a religion, it is the world's third-largest, with over 1.2–1.35 billion followers, or 15–16% of the global population, known as Hindus. The word ''Hindu'' is an exonym, and while Hinduism has been called the oldest religion in the world, many practitioners refer to their religion as '' Sanātana Dharma'' ( sa, सनातन धर्म, lit='the Eternal Dharma'), a modern usage, which refers to the idea that its origins lie beyond human history, as revealed in the Hindu texts. Another endonym is ''Vaidika dharma'', the dharma related to the Vedas. Hinduism is a diverse system of thought marked by a range of philosophies and shared concepts, rituals, cosmological systems, pilgrimage sites, and shared textual sources that discuss theology, metaphysics, mythology, Vedic yajna, yoga, agamic rituals, and temple building, among other to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rama
Rama (; ), Ram, Raman or Ramar, also known as Ramachandra (; , ), is a major deity in Hinduism. He is the seventh and one of the most popular '' avatars'' of Vishnu. In Rama-centric traditions of Hinduism, he is considered the Supreme Being. Rama is said to have been born to Kaushalya and Dasharatha in Ayodhya, the ruler of the Kingdom of Kosala. His siblings included Lakshmana, Bharata, and Shatrughna. He married Sita. Though born in a royal family, their life is described in the Hindu texts as one challenged by unexpected changes such as an exile into impoverished and difficult circumstances, ethical questions and moral dilemmas. Of all their travails, the most notable is the kidnapping of Sita by demon-king Ravana, followed by the determined and epic efforts of Rama and Lakshmana to gain her freedom and destroy the evil Ravana against great odds. The entire life story of Rama, Sita and their companions allegorically discusses duties, rights and social responsibil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interstellar Object
An interstellar object is an astronomical object (such as an asteroid, a comet, or a rogue planet, but not a star) in interstellar space that is not gravitationally bound to a star. This term can also be applied to an object that is on an interstellar trajectory but is temporarily passing close to a star, such as certain asteroids and comets (including exocomets). In the latter case, the object may be called an interstellar interloper. The first interstellar objects discovered were rogue planets, planets ejected from their original stellar system (e.g., OTS 44 or Cha 110913−773444), though they are difficult to distinguish from sub-brown dwarfs, planet-mass objects that formed in interstellar space as stars do. The first interstellar object which was discovered traveling through our Solar System was 1I/ʻOumuamua in 2017. The second was 2I/Borisov in 2019. They both possess significant hyperbolic excess velocity, indicating they did not originate in the Solar System. Earlier, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
