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Sputnik 2
Sputnik 2 (, , ''Satellite 2'', or Prosteyshiy Sputnik 2 (PS-2, , ''Simplest Satellite 2'', launched on 3 November 1957, was the second spacecraft launched into Earth orbit, and the first to carry an animal into orbit, a Soviet space dog named Laika. Launched by the Soviet Union via a modified R-7 intercontinental ballistic missile, Sputnik 2 was a cone-shaped capsule with a base diameter of that weighed around , though it was not designed to separate from the rocket core that brought it to orbit, bringing the total mass in orbit to . It contained several compartments for radio transmitters, a telemetry system, a programming unit, a regeneration and temperature-control system for the cabin, and scientific instruments. A separate sealed cabin contained the dog Laika. Though Laika died shortly after reaching orbit, Sputnik 2 marked another huge success for the Soviet Union in The Space Race, lofting huge payload for the time, sending an animal into orbit, and, for the fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Memorial Museum Of Cosmonautics
The Memorial Museum of Cosmonautics (), also known as the Memorial Museum of Astronautics or Memorial Museum of Space Exploration, is a museum in Moscow, Russia, dedicated to space exploration. It is located within the base of the Monument to the Conquerors of Space in the north-east of the city. The museum contains a wide variety of Soviet and Russian space-related exhibits and models which explore the history of flight; astronomy; space exploration; space technology; and space in the arts. According to the Russian tourist board, the museum's collection holds approximately 85,000 different items and receives approximately 300,000 visitors yearly. History The museum primarily focuses on the Soviet space program with major themes like the first person in space Yuri Gagarin, the rocket engineer Sergei Korolev, the satellite Sputnik and the spacecraft Soyuz programme, Soyuz. Renovation On Cosmonautics Day, 2009, the museum was reopened after three years of reconstruction. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Transmitter
In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna with the purpose of signal transmission to a radio receiver. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna radiates radio waves. Transmitters are necessary component parts of all electronic devices that communicate by radio, such as radio (audio) and television broadcasting stations, cell phones, walkie-talkies, wireless computer networks, Bluetooth enabled devices, garage door openers, two-way radios in aircraft, ships, spacecraft, radar sets and navigational beacons. The term ''transmitter'' is usually limited to equipment that generates radio waves for communication purposes; or radiolocation, such as radar and navigational transmitters. Generators of radio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atmosphere Of Earth
The atmosphere of Earth is composed of a layer of gas mixture that surrounds the Earth's planetary surface (both lands and oceans), known collectively as air, with variable quantities of suspended aerosols and particulates (which create weather features such as clouds and hazes), all retained by gravity of Earth, Earth's gravity. The atmosphere serves as a protective buffer between the Earth's surface and outer space, shields the surface from most meteoroids and ultraviolet solar irradiance, solar radiation, keeps it warm and reduces diurnal temperature variation (temperature extremes between daytime, day and night) through heat retention (greenhouse effect), redistributes heat and moisture among different regions via air currents, and provides the atmospheric chemistry, chemical and climate conditions allowing life to exist and evolution, evolve on Earth. By mole fraction (i.e., by quantity of molecules), dry air contains 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atmospheric Electromagnetic Opacity
An atmosphere () is a layer of gases that envelop an astronomical object, held in place by the gravity of the object. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low. A stellar atmosphere is the outer region of a star, which includes the layers above the opaque photosphere; stars of low temperature might have outer atmospheres containing compound molecules. The atmosphere of Earth is composed of nitrogen (78%), oxygen (21%), argon (0.9%), carbon dioxide (0.04%) and trace gases. Most organisms use oxygen for respiration; lightning and bacteria perform nitrogen fixation which produces ammonia that is used to make nucleotides and amino acids; plants, algae, and cyanobacteria use carbon dioxide for photosynthesis. The layered composition of the atmosphere minimises the harmful effects of sunlight, ultraviolet radiation, solar wind, and cosmic rays and thus protects the organisms from genetic damage. The current composition o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrode
An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit (e.g. a semiconductor, an electrolyte, a vacuum or a gas). In electrochemical cells, electrodes are essential parts that can consist of a variety of materials (chemicals) depending on the type of cell. An electrode may be called either a cathode or anode according to the direction of the electric current, unrelated to the potential difference between electrodes. Michael Faraday coined the term "" in 1833; the word recalls the Greek ἤλεκτρον (, "amber") and ὁδός (, "path, way"). The electrophore, invented by Johan Wilcke in 1762, was an early version of an electrode used to study static electricity. Anode and cathode in electrochemical cells Electrodes are an essential part of any battery. The first electrochemical battery was devised by Alessandro Volta and was aptly named the Voltaic cell. This battery consisted of a stack of copper and zinc electrodes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Safety Harness
A safety harness is a form of Personal protective equipment, protective equipment designed to safeguard the user from injury or death from falling. The core item of a fall arrest system, the harness is usually fabricated from rope, Wire rope, braided wire cable, or Webbing, synthetic webbing. It is attached securely to a stationary object directly by a Carabiner, locking device or indirectly via a rope, cable, or webbing and one or more locking devices. Some safety harnesses are used in combination with a Shock absorber, shock-absorbing lanyard, which is used to regulate deceleration and thereby prevent a serious G-force injury when the end of the rope is reached. An unrelated use with a materially different arresting mechanism is bungee jumping. Though they share certain similar attributes, a safety harness is not to be confused with a climbing harness used for mountaineering, rock climbing, and Climbing gym, climbing gyms. Specialized harnesses for animal rescue or transfer, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
R-5 Pobeda
The R-5 Pobeda (Побе́да, "Victory") was a medium range ballistic missile developed by the Soviet Union during the Cold War. The upgraded R-5M version, the first Soviet missile capable of carrying a nuclear weapon, was assigned the NATO reporting name SS-3 Shyster and carried the GRAU index 8K51. The R-5 was developed by OKB-1 as a single-stage missile with a detachable warhead reentry vehicle. The R-5M was a nuclear armed missile with greater payload and weight entered service in March 1956, was deployed along the western and eastern Russian borders, and in 1959 was installed in East Germany, the first Soviet nuclear missile bases outside the USSR. The missile was retired in 1967, superseded by the R-12. In 1958, R-5A rockets were used to launch pairs of dogs to altitudes above . Description The R-5 was a single-stage Medium Range Ballistic Missile (MRBM) with a range of . Using 92% ethanol for fuel and liquid oxygen as an oxidizer, the rocket had a dry weight of (fue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
October Revolution
The October Revolution, also known as the Great October Socialist Revolution (in Historiography in the Soviet Union, Soviet historiography), October coup, Bolshevik coup, or Bolshevik revolution, was the second of Russian Revolution, two revolutions in Russia in 1917. It was led by Vladimir Lenin's Bolsheviks as part of the broader Russian Revolution of 1917–1923. It began through an insurrection in Petrograd (now Saint Petersburg) on . It was the precipitating event of the Russian Civil War. The initial stage of the October Revolution, which involved the assault on Petrograd, occurred largely without any casualties. The October Revolution followed and capitalized on the February Revolution earlier that year, which had led to the abdication of Nicholas II and the creation of the Russian Provisional Government. The provisional government, led by Alexander Kerensky, had taken power after Grand Duke Michael Alexandrovich of Russia, Grand Duke Michael, the younger brother of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sergei Korolev
Sergei Pavlovich Korolev (14 January 1966) was the lead Soviet Aerospace engineering, rocket engineer and spacecraft designer during the Space Race between the United States and the Soviet Union in the 1950s and 1960s. He invented the R-7 Semyorka, R-7 Rocket, Sputnik 1, and was involved in the launching of Laika, Sputnik 3, the first luna 2, human-made object to make contact with another celestial body, Soviet space dogs#Belka and Strelka, Belka and Strelka, the first human being, Yuri Gagarin, into space, Voskhod 1, and the first person, Alexei Leonov, to conduct a Voskhod 2, spacewalk. Although Korolev trained as an aircraft designer, his greatest strengths proved to be in design integration, organization and strategic planning. Arrested on a false official charge as a "member of an anti-Soviet counter-revolutionary organization" (which would later be reduced to "saboteur of military technology"), he was imprisoned in 1938 for almost six years, including a few months in a K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Geophysical Year
The International Geophysical Year (IGY; ), also referred to as the third International Polar Year, was an international scientific project that lasted from 1 July 1957 to 31 December 1958. It marked the end of a long period during the Cold War when scientific interchange between East and West had been seriously interrupted. Sixty-seven countries participated in IGY projects, although one notable exception was the mainland China, People's Republic of China, which was protesting against the participation of the Republic of China (Taiwan). East and West agreed to nominate the Belgian Marcel Nicolet as secretary general of the associated international organization. The IGY encompassed fourteen Earth science disciplines: Auroral light, aurora, airglow, cosmic rays, Earth's magnetic field, geomagnetism, gravity, ionosphere, ionospheric physics, longitude and latitude determinations (precision mapping), meteorology, oceanography, Ionizing radiation, nuclear radiation, glaciology, seismo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikita Khrushchev
Nikita Sergeyevich Khrushchev (– 11 September 1971) was the General Secretary of the Communist Party of the Soviet Union, First Secretary of the Communist Party of the Soviet Union from 1953 to 1964 and the Premier of the Soviet Union, Chairman of the Council of Ministers (premier) from 1958 to 1964. During his tenure, he stunned the communist world with his denunciation of his predecessor Joseph Stalin and embarked on a campaign of de-Stalinization with his key ally Anastas Mikoyan. Khrushchev sponsored the early Soviet space program and presided over various domestic reforms. After some false starts, and a Cuban Missile Crisis, narrowly avoided nuclear war over Cuba, he conducted successful negotiations with the United States to reduce Cold War tensions. In 1964, the Kremlin circle Nikita Khrushchev#Removal, stripped him of power, replacing him with Leonid Brezhnev as the First Secretary and Alexei Kosygin as the Premier. Khrushchev was born in a village in western Russia. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mikhail Tikhonravov
Mikhail Klavdievich Tikhonravov (29 July 1900 – 3 March 1974) was a Soviet engineer who was a pioneer of spacecraft design and rocketry. Mikhail Tikhonravov was born in Vladimir, Russia. He attended the Zhukovsky Air Force Academy from 1922 to 1925, where he was exposed to Konstantin Tsiolkovsky's ideas of spaceflight. After graduation he worked in several aircraft industries and was engaged in developing gliders. From 1931 he devoted himself to rocketry. In 1932, he joined Group for the Study of Reactive Motion (GIRD), as one of the four brigade leaders. His brigade built the GIRD-09 rocket, fueled by liquid oxygen and jellied gasoline, and launched on 17 August 1933. Tikhonravov became part of the Reactive Scientific Research Institute (RNII) when GIRD and the Gas Dynamics Laboratory (GDL) merged in 1933. From 1938 Tikhonravov researched rocket engines with liquid fuel and developed rockets for the purpose of upper atmosphere research. In the end of the 1930s, the dev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
