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Supernova
A supernova (: supernovae or supernovas) is a powerful and luminous explosion of a star. A supernova occurs during the last stellar evolution, evolutionary stages of a massive star, or when a white dwarf is triggered into runaway nuclear fusion. The original object, called the ''progenitor'', either collapses to a neutron star or black hole, or is completely destroyed to form a diffuse nebula. The peak optical luminosity of a supernova can be comparable to that of an entire galaxy before fading over several weeks or months. The last supernova directly observed in the Milky Way was Kepler's Supernova in 1604, appearing not long after Tycho's Supernova in 1572, both of which were visible to the naked eye. The supernova remnant, remnants of more recent supernovae have been found, and observations of supernovae in other galaxies suggest they occur in the Milky Way on average about three times every century. A supernova in the Milky Way would almost certainly be observable through mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of United States Navy Enlisted Rates
In the United States Navy, a ''rate'' is the military rank of an Enlisted rank, enlisted sailor, indicating where the sailor stands within the chain of command, and also defining one's pay grade. However, in the U.S. Navy, only officers carry the term ''rank'', while it is proper to refer to an enlisted sailor's pay grade as ''rate.'' This is not to be confused with the term "rating", which refers to one's area of occupational specialization within the enlisted Navy (see below and also List of United States Navy ratings ). Associated with the enlisted pay grades is a numbering system from the most junior enlisted sailor ("E-1") to the most senior enlisted sailor ("E-9"). This enlisted numbering system is the same across all six branches of the United States Armed Forces, U.S. military. All E-1s through E-3s are known as seaman, fireman, airman, constructionman, or hospitalman. E-4 through E-6 are called petty officers. All E-7s are called chief petty officer, E-8s senior chie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SN Postcode Area
The SN postcode area, also known as the Swindon postcode area, is a group of eighteen postcode districts in England, within ten post towns. These cover north Wiltshire (including Swindon, Chippenham, Wiltshire, Chippenham, Calne, Corsham, Devizes, Malmesbury, Wiltshire, Malmesbury, Marlborough, Wiltshire, Marlborough, Melksham and Pewsey), plus a small part of south-west Oxfordshire (including Faringdon) and a very small part of Gloucestershire. __TOC__ Coverage The approximate coverage of the postcode districts: , - ! SN1 , SWINDON , Swindon town centre south of the railway line, Old Town, southwest suburbs , Borough of Swindon, Swindon , - ! SN2 , SWINDON , Swindon town centre north of the railway line, inner suburbs to the north and northwest including Upper Stratton and Kingsdown , Swindon , - ! SN3 , SWINDON , Swindon east suburbs, Stratton St Margaret, South Marston , Swindon , - ! SN4 , SWINDON , Royal Wootton Bassett, Clyffe Pypard, Broad Town, Broad Hinton ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SN Brussels Airlines
SN Brussels Airlines (SNBA) was the flag carrier of Belgium, which mainly operated from Brussels Airport. SNBA was the trading name of the Belgian airline Delta Air Transport. SNBA was a full-service airline, connecting Brussels with the rest of Europe. It also flew to Africa, continuing Sabena's extensive network there. The airline merged with Virgin Express into Brussels Airlines which started operations on 25 March 2007. The airline had its head office in Airport Building 117 in Brussels Airport, Zaventem, near Brussels."World Airline Directory." ''Flight International''. 30 March – 5 April 200471 History The airline was founded in 2002, when a group of Belgian investors (companies, financial institutions and regional investment companies, as well as the Brussels and Walloon governments) set up SN Airholding, headed by Étienne Davignon. After the 2001 collapse of Sabena, Belgium's then flag carrier airline, Belgium was left without a national airline for a few mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Party (Poland)
The National Party (, or ''SN'') was a Polish nationalism, Polish nationalist political party formed on 7 October 1928 after the transformation of the Popular National Union. The National Party gathered together most of the political forces of Poland's National Democracy (Poland), National Democracy right wing. Shortly before World War II the National Party, 200,000 strong, was the largest opposition party. In the 1930s two main factions competed within the National Party, the "old generation" and the "young generation", divided by age and political programs. The old generation supported parliamentary political competition, while the activist young generation advocated extra-parliamentary political struggle. In 1935 the young activists took over the party's leadership. In 1934 a substantial part of the young faction split off from the National Party, forming a National Radical Camp (1934), National-Radical Camp. During World War II, many National Party activists joined the Nati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Substantia Nigra
The substantia nigra (SN) is a basal ganglia structure located in the midbrain that plays an important role in reward and movement. ''Substantia nigra'' is Latin for "black substance", reflecting the fact that parts of the substantia nigra appear darker than neighboring areas due to high levels of neuromelanin in dopaminergic neurons. Parkinson's disease is characterized by the loss of dopaminergic neurons in the substantia nigra pars compacta. Although the substantia nigra appears as a continuous band in brain sections, anatomical studies have found that it actually consists of two parts with very different connections and functions: the pars compacta (SNpc) and the pars reticulata (SNpr). The pars compacta serves mainly as a projection to the basal ganglia circuit, supplying the striatum with dopamine. The pars reticulata conveys signals from the basal ganglia to numerous other brain structures. Structure The substantia nigra, along with four other nuclei, is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
METAR
METAR is a format for reporting weather information. A METAR weather report is predominantly used by aircraft pilots, and by meteorologists, who use aggregated METAR information to assist in weather forecasting. Raw METAR is highly standardized through the International Civil Aviation Organization (ICAO), which enables it to be understood throughout most of the world. Report names In its publication the '' Aeronautical Information Manual'' (''AIM''), the United States Federal Aviation Administration (FAA) describes the report as ''aviation routine weather report'', while the international authority for the code form, the World Meteorological Organization (WMO), describes it as the ''aerodrome routine meteorological report.'' The National Oceanic and Atmospheric Administration (part of the United States Department of Commerce) and the United Kingdom's Met Office both employ the definition used by the FAA. METAR is also known as ''Meteorological Terminal Aviation Routine Weathe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Network
Space Network (SN) is a NASA program that combines space and ground elements to support spacecraft communications in Earth vicinity. The SN Project Office at Goddard Space Flight Center (GSFC) manages the SN, which consists of: * The geosynchronous Tracking and Data Relay Satellites (TDRS), * Supporting ground terminal systems, * The Bilateration Ranging and Transponder System (BRTS), * Merritt Island Launch Annex (MILA) relay, * Network Control Center Data System (NCCDS). Satellite generations Tracking and Data Relay Satellite (TDRS) currently consists of first-generation (F1–F7), and second-generation (F8–F10) satellites. The space segment of the SN consists of up to six operational relay satellites in geosynchronous orbit. These communications satellites are allocated longitudes for relaying forward and return service signals to and from customers, any entity with an Earth-orbiting satellite that has an agreement with SN to use its communications services, for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brussels Airlines
Brussels Airlines is the flag carrier and largest airline of Belgium, based and headquartered at Brussels Airport. It operates to over 100 destinations in Europe, North America and Africa and also offers charter services, maintenance and crew training. It is a member of the Star Alliance as well as the International Air Transport Association. The airline's IATA code ''SN'' is inherited from its predecessors, Sabena and SN Brussels Airlines. Brussels Airlines is part of the Lufthansa Group. The company slogan is ''′You’re in good company′.'' History Early years (2005–2010) Brussels Airlines was created following the merger of Virgin Express and SN Brussels Airlines (SNBA), this company was subsequently created after the bankruptcy of Belgium's previous national carrier Sabena. On 12 April 2005, SN Airholding, the company behind SNBA, signed an agreement with Richard Branson, giving it control over Virgin Express. On 31 March 2006 SNBA and Virgin Express announce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Servant Of The People
Servant of the People (; ''SN'') is a Liberalism, liberal, Centrism, centrist, Pro-Europeanism, pro-European List of political parties in Ukraine, political party in Ukraine. Since both the 2019 Ukrainian presidential election and the 2019 Ukrainian parliamentary election, it has been the ruling political party in Ukraine. It is best known for being the political party of President Volodymyr Zelenskyy, Volodymyr Zelenskyy. The party is named after the popular Ukrainian TV series ''Servant of the People (2015 TV series), Servant of the People'', in which Zelenskyy played a fictional Ukrainian president. It was formed in late 2017 and was officially registered on 31 March 2018 on the basis of the previously registered Party of Decisive Changes."The Ministr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savin–Norov Machine Gun
The SN (Savin and Norov) was an aircraft machine gun manufactured in small numbers in the Soviet Union before World War II. The gun was intended to achieve a higher rate of fire than the ShKAS, while using the same 7.62×54mmR cartridge. In order to achieve this goal, the barrel and bolt moved in opposite directions. Sources vary as to high a rate of fire was actually achieved. One indicates "more than 3600 RPM" while others give the 2800–3000 RPM range.Широкорад А.Б. (2001) ''История авиационного вооружения'' Харвест (Shirokorad A.B. (2001) ''Istorya aviatsionnogo vooruzhenia'' Harvest. ) (''History of aircraft armament''), p. 73 History The SN gun was designed in 1934-1935 by I.V. Savin (И.В. Савин) and A.K. Norov (А.К. Норов). According to a Western source, it was offered to the VVS, which rejected it in 1936. Soviet sources indicate that the SN machine gun was installed in the wings of three Polikarpov I-16 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senegal
Senegal, officially the Republic of Senegal, is the westernmost country in West Africa, situated on the Atlantic Ocean coastline. It borders Mauritania to Mauritania–Senegal border, the north, Mali to Mali–Senegal border, the east, Guinea to Guinea–Senegal border, the southeast and Guinea-Bissau to Guinea-Bissau–Senegal border, the southwest. Senegal nearly surrounds The Gambia, a country occupying a narrow sliver of land along the banks of the Gambia River, which separates Senegal's southern region of Casamance from the rest of the country. It also shares a maritime border with Cape Verde. Senegal's capital is Dakar. Senegal is the westernmost country in the mainland of the Old World, or Afro-Eurasia. It owes its name to the Senegal River, which borders it to the east and north. The climate is typically Sahelian, though there is a wet season, rainy season. Senegal covers a land area of almost and has a population of around 18 million. The state is a Presidential system ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
