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Lakenheath-Bentwaters Incident
The Lakenheath-Bentwaters Incident was a series of radar and visual contacts with unidentified flying objects over airbases in eastern England on the night of 13–14 August 1956, involving personnel from the Royal Air Force (RAF) and the United States Air Force (USAF). The incident has since gained some prominence in the literature of ufology and the popular media.See for example Ridpath, I. ''The UFO Conspiracy'', ''The Sunday Times'', 19 March 1978 The final report of the Condon Committee, which otherwise concluded that UFOs were simple misidentifications of natural phenomena or aircraft, took an unusual position on the case: "In conclusion, although conventional or natural explanations certainly cannot be ruled out, the probability of such seems low in this case and the probability that at least one genuine UFO was involved appears to be fairly high". [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Association For The Advancement Of Science
The American Association for the Advancement of Science (AAAS) is an American international non-profit organization with the stated goals of promoting cooperation among scientists, defending scientific freedom, encouraging scientific responsibility, and supporting scientific education and science outreach for the betterment of all humanity. It is the world's largest general scientific society, with over 120,000 members, and is the publisher of the well-known scientific journal ''Science''. History Creation The American Association for the Advancement of Science was created on September 20, 1848, at the Academy of Natural Sciences in Philadelphia, Pennsylvania. It was a reformation of the Association of American Geologists and Naturalists. The society chose William Charles Redfield as their first president because he had proposed the most comprehensive plans for the organization. According to the first constitution which was agreed to at the September 20 meeting, the goal of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perseid Meteor 2007
The Perseids are a prolific meteor shower associated with the comet Swift–Tuttle. The meteors are called the Perseids because the point from which they appear to hail (called the radiant) lies in the constellation Perseus. Etymology The name is derived from the word Perseidai ( el, Περσείδαι), the sons of Perseus in Greek mythology. Characteristics The stream of debris is called the Perseid cloud and stretches along the orbit of the comet Swift–Tuttle. The cloud consists of particles ejected by the comet as it travels on its 133-year orbit. Most of the particles have been part of the cloud for around a thousand years. However, there is also a relatively young filament of dust in the stream that was pulled off the comet in 1865, which can give an early mini-peak the day before the maximum shower. The dimensions of the cloud in the vicinity of the Earth are estimated to be approximately 0.1 astronomical units (AU) across and 0.8 AU along the Earth's orbit, spre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Venom
The de Havilland DH 112 Venom is a British post-war single-engined jet aircraft developed and manufactured by the de Havilland Aircraft Company. Much of its design was derived from the de Havilland Vampire, the firm's first jet-powered combat aircraft. The Venom entered service with the Royal Air Force (RAF), where it was used as a single-seat fighter-bomber and two-seat night fighter. A dedicated model for aerial reconnaissance was also operated by the Swiss Air Force. The Venom functioned as an interim stage between the first generation of British jet fighters – straight-wing aircraft powered by centrifugal flow engines such as the Gloster Meteor and the Vampire – and later swept wing, axial flow-engined combat aircraft, such as the Hawker Hunter and de Havilland Sea Vixen. Accordingly, the type had a relatively short service life in the RAF, being withdrawn from frontline operations by the service in 1962 as a result of the introduction of more capable designs. Howeve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technical Sergeant
Technical sergeant is the name of two current and two former enlisted ranks in the United States Armed Forces, as well as in the U.S. Civil Air Patrol. Outside the United States, it is used only by the Philippine Army, Philippine Air Force and the Philippine Marine Corps. Philippines The rank of technical sergeant is used by the Armed Forces of the Philippines. It is a non-commissioned officer rank used by Philippine Army, Philippine Air Force and Philippine Marine Corps (under the Philippine Navy). The rank stands above the rank of Staff sergeant and below Master sergeant. File:PHIL ARMY TSG WOODLAND.svg, File:PAF TSG SL.svg, File:PMC TSG Slv.svg, United States Technical sergeant is a rank in the United States Air Force, United States Space Force, and Civil Air Patrol. It is a former rank in the United States Army and United States Marine Corps. Army The rank of technical sergeant existed from after World War I until 1948 when the rank was renamed sergeant first class ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolide
A bolide is normally taken to mean an exceptionally bright meteor, but the term is subject to more than one definition, according to context. It may refer to any large crater-forming body, or to one that explodes in the atmosphere. It can be a synonym for a fireball, sometimes specific to those with an apparent magnitude of −14 or brighter. Definitions The word ''bolide'' (; from Italian via Latin, ) may refer to somewhat different phenomena depending on the context in which the word appears, and readers may need to make inferences to determine which meaning is intended in a particular publication. One sense refers to an extremely bright meteor, especially one that explodes in the atmosphere. In astronomy, it refers to a fireball about as bright as the full moon, and it is generally considered a synonym for a fireball. In geology, a bolide is a very large impactor. One definition describes a bolide as a fireball reaching an apparent magnitude of −14 or brightermore th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Golf Ball
A golf ball is a special ball designed to be used in the game of golf. Under the rules of golf, a golf ball has a mass no more than , has a diameter not less than , and performs within specified velocity, distance, and symmetry limits. Like golf clubs, golf balls are subject to testing and approval by The R&A (formerly part of the Royal and Ancient Golf Club of St Andrews) and the United States Golf Association, and those that do not conform with regulations may not be used in competitions ''(Rule 5–1)''. History Early Balls It is commonly believed that hard wooden, round balls, made from hardwoods such as beech and box, were the first balls used for golf between the 14th through the 17th centuries. Though wooden balls were no doubt used for other similar contemporary stick and ball games, there is no definite evidence that they were actually used in golf in Scotland. It is equally, if not more likely, that leather balls filled with cows' hair were used, imported from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RAF Lakenheath
Royal Air Force Lakenheath or RAF Lakenheath is a Royal Air Force station near the village of Lakenheath in Suffolk, England, UK, north-east of Mildenhall and west of Thetford. The base also sits close to Brandon. Despite being an RAF station, Lakenheath currently only hosts United States Air Force (USAF) units and personnel. The host wing is the 48th Fighter Wing (48 FW), also known as the Liberty Wing, assigned to United States Air Forces in Europe - Air Forces Africa (USAFE-AFAFRICA). The wing operates the F-15E Strike Eagle and the F-35A Lightning II. History First World War The first use of Lakenheath Warren as a Royal Flying Corps airfield was during the First World War, when the area was made into a bombing and ground-attack range for aircraft flying from RFC Feltwell and RFC Thetford. Second World War In 1940, the Air Ministry selected Lakenheath as an alternative for nearby RAF Mildenhall and used it as a decoy airfield. Surfaced runways were constructed in 1941 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C-47
The Douglas C-47 Skytrain or Dakota (Royal Air Force, RAF, Royal Australian Air Force, RAAF, Royal Canadian Air Force, RCAF, Royal New Zealand Air Force, RNZAF, and South African Air Force, SAAF designation) is a airlift, military transport aircraft developed from the civilian Douglas DC-3 airliner. It was used extensively by the Allies of World War II, Allies during World War II and remained in front-line service with various military operators for many years.Parker 2013, pp. 13, 35, 37, 39, 45-47. Design and development The C-47 differed from the civilian DC-3 by way of numerous modifications, including being fitted with a cargo door, hoist attachment and strengthened floor - along with a shortened tail cone for Military glider, glider-towing shackles, and an Astrodome (aeronautics), astrodome in the cabin roof.Wilson, Stewart. ''Aircraft of WWII''. Fyshwick, ACT, Australia: Aerospace Publications Pty Ltd., 1998. . During World War II, the armed forces of many countries used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anomalous Propagation
Anomalous propagation (sometimes shortened to anaprop or anoprop) Peter Meischner (ed.), ''Weather Radar: Principles and Advanced Applications'', Springer Science & Business Media, 2005, page 144 includes different forms of radio propagation due to an unusual distribution of temperature and humidity with height in the atmosphere. While this includes propagation with larger losses than in a standard atmosphere, in practical applications it is most often meant to refer to cases when signal propagates beyond normal radio horizon. Anomalous propagation can cause interference to VHF and UHF radio communications if distant stations are using the same frequency as local services. Over-the-air analog television broadcasting, for example, may be disrupted by distant stations on the same channel, or experience distortion of transmitted signals ghosting). Radar systems may produce inaccurate ranges or bearings to distant targets if the radar "beam" is bent by propagation effects. However, rad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Clarke (journalist)
David William Clarke (born 1967) is an investigative journalist, reader and lecturer at Sheffield Hallam University, England. He has a lifelong interest in folklore, Fortean phenomena and extraordinary personal experiences. He is frequently consulted by the national and international media on contemporary legend and UFOs and acted as curator for The National Archives UFO project from 2008–13. Education Clarke graduated with a BA (Hons) from the University of Sheffield in 1990 in Archaeology, Prehistory and Medieval History. He has a PhD in English Cultural Tradition and Folklore from the University of Sheffield. He obtained the National Certificate qualification in Newspaper Journalism from the National Council for the Training of Journalists (NCTJ) in 1992 and is a member of the Association of Journalism Educators (AJE) and a fellow of the Higher Education Academy (FHEA). Career From 1991 Clarke worked as a news reporter and news editor for the ''Rotherham Advertiser'', ''Shef ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury (planet), Mercury. In the English language, Mars is named for the Mars (mythology), Roman god of war. Mars is a terrestrial planet with a thin atmosphere (less than 1% that of Earth's), and has a crust primarily composed of elements similar to Earth's crust, as well as a core made of iron and nickel. Mars has surface features such as impact craters, valleys, dunes and polar ice caps. It has two small and irregularly shaped moons, Phobos (moon), Phobos and Deimos (moon), Deimos. Some of the most notable surface features on Mars include Olympus Mons, the largest volcano and List of tallest mountains in the Solar System, highest known mountain in the Solar System and Valles Marineris, one of the largest canyons in the Solar System. The North Polar Basin (Mars), Borealis basin in the Northern Hemisphere covers approximately 40% of the planet and may be a la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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