|
Jodrell Bank Centre For Astrophysics
The Jodrell Bank Centre for Astrophysics at the University of Manchester, is among the largest astrophysics groups in the UK. It includes the Jodrell Bank Observatory, the MERLIN/VLBI National Facility, and the Jodrell Bank Visitor Centre. The centre was formed after the merger of the Victoria University of Manchester and UMIST which brought two astronomy groups together. The Jodrell Bank site also hosts the headquarters of the SKA Observatory (SKAO) - the International Governmental Organisation (IGO) tasked with the delivery and operation of the Square Kilometre Array, created on the signing of the Rome Convention in 2019. The SKA will be the largest telescope in the world - construction is expected to start at the end of this decade. The JBCA is part of the School of Physics and Astronomy. The current director is Professor Michael Garrett. Research The research at the Centre focuses on: * Astrochemistry * Astrophysical masers * The Cosmic Microwave Background * Galaxy f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lovell Telescope
The Lovell Telescope is a radio telescope at Jodrell Bank Observatory, near Goostrey, Cheshire in the north-west of England. When construction was finished in 1957, the telescope was the largest steerable dish radio telescope in the world at 76.2 m (250 ft) in diameter; it is now the third-largest, after the Green Bank telescope in West Virginia, United States, and the Effelsberg telescope in Germany. It was originally known as the "250 ft telescope" or the Radio Telescope at Jodrell Bank, before becoming the Mark I telescope around 1961 when future telescopes (the Mark II, III, and IV) were being discussed.Lovell, ''The Jodrell Bank Telescopes'' It was renamed to the Lovell Telescope in 1987 after Sir Bernard Lovell, and became a Grade I listed building in 1988. The telescope forms part of the MERLIN and European VLBI Network arrays of radio telescopes. Both Bernard Lovell and Charles Husband were knighted for their roles in creating the telescope. In September ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Star Formation
Star formation is the process by which dense regions within molecular clouds in The "medium" is present further soon.-->interstellar space, sometimes referred to as "stellar nurseries" or "-forming regions", and form s. As a branch of , star formation includes the study of the interstellar medium (ISM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark II (radio Telescope)
The Mark II is a radio telescope located at Jodrell Bank Observatory, near Goostrey, Cheshire, in the north-west of England. It was built on the site of the 218 ft (66.4 m) Transit Telescope. Construction was completed in 1964. The telescope's design was used as the basis of the Goonhilly 1 dish,Lovell, ''Jodrell Bank Telescopes'', p. 224 and the Mark III telescope is also based on a similar design.Lovell, ''Jodrell Bank Telescopes'', p. 12 The original dish surface of the telescope was more accurate than the Lovell Telescope's at the time it was made, meaning that it was better suited for observations at higher frequencies. As well as operating as a solo instrument, it has been used as an interferometer with the Lovell Telescope, which provides a baseline. It is commonly used as part of the Multi-Element Radio Linked Interferometer Network (MERLIN), and for Very Long Baseline Interferometry observations. Design and construction The telescope was designed by Cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Age
The Space Age is a period encompassing the activities related to the Space Race, space exploration, space technology, and the cultural developments influenced by these events, beginning with the launch of Sputnik 1 during 1957, and continuing to the present. History The 1950s-1970s The Space Age was an era of new military, political, technological, and scientific developments which began with the Soviet Union's October 4, 1957 launch of Earth's first artificial satellite Sputnik 1. Weighing and orbiting the Earth once every 98 minutes,. The Space Race between the United States and the Soviet Union began in 1957 with the launching of the first artificial satellite Sputnik 1. The race resulted in rapid advances in rocketry, materials science, and other areas. Much of the technology developed for space applications has been spun off and found additional uses, such as memory foam. In 1958 the United States launched its first satellite, Explorer 1. The same year Preside ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Probe
A space probe is an artificial satellite that travels through space to collect scientific data. A space probe may orbit Earth; approach the Moon; travel through interplanetary space; flyby, orbit, or land or fly on other planetary bodies; or enter interstellar space. Many countries and private companies have launched probes to planets, asteroids, moons around the Solar System, including the Soviet Union, the United States, India, and many more. History On 4 October 1957, the first artificial satellite to orbit Earth was Sputnik 1, launched by the USSR. Four months later, on 1 February 1958, Explorer 1 was launched by the United States, being the first space probe. Explorer 1, collecting data on temperature, cosmic rays, and micrometeorite impacts. The first attempted lunar probe was the Luna E-1 No.1, launched on 23 September 1958. The goal of a lunar probe repeatedly failed until 4 January 1959 when Luna 1 orbited around the moon and then the sun. The success of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravitational Lens
A gravitational lens is a distribution of matter (such as a cluster of galaxies) between a distant light source and an observer that is capable of bending the light from the source as the light travels toward the observer. This effect is known as gravitational lensing, and the amount of bending is one of the predictions of Albert Einstein's general theory of relativity. Treating light as corpuscles travelling at the speed of light, Newtonian physics also predicts the bending of light, but only half of that predicted by general relativity. Although Einstein made unpublished calculations on the subject in 1912, Orest Khvolson (1924) and Frantisek Link (1936) are generally credited with being the first to discuss the effect in print. However, this effect is more commonly associated with Einstein, who published an article on the subject in 1936. Fritz Zwicky posited in 1937 that the effect could allow galaxy clusters to act as gravitational lenses. It was not until 1979 that th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrophysical Maser
An astrophysical maser is a naturally occurring source of stimulated spectral line emission, typically in the microwave portion of the electromagnetic spectrum. This emission may arise in molecular clouds, comets, planetary atmospheres, stellar atmospheres, or various other conditions in interstellar space. Background Discrete transition energy Like a laser, the emission from a maser is stimulated (or ''seeded'') and monochromatic, having the frequency corresponding to the energy difference between two quantum-mechanical energy levels of the species in the gain medium which have been pumped into a non-thermal population distribution. However, naturally occurring masers lack the resonant cavity engineered for terrestrial laboratory masers. The emission from an astrophysical maser is due to a single pass through the gain medium and therefore generally lacks the spatial coherence and mode purity expected from a laboratory maser. Nomenclature Due to the differences between e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulsar
A pulsar (from ''pulsating radio source'') is a highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic poles. This radiation can be observed only when a beam of emission is pointing toward Earth (similar to the way a lighthouse can be seen only when the light is pointed in the direction of an observer), and is responsible for the pulsed appearance of emission. Neutron stars are very dense and have short, regular rotational periods. This produces a very precise interval between pulses that ranges from milliseconds to seconds for an individual pulsar. Pulsars are one of the candidates for the source of ultra-high-energy cosmic rays. (See also centrifugal mechanism of acceleration.) The periods of pulsars make them very useful tools for astronomers. Observations of a pulsar in a binary neutron star system were used to indirectly confirm the existence of gravitational radiation. The first extrasolar planets were discovered aroun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quasar
A quasar is an extremely luminous active galactic nucleus (AGN). It is pronounced , and sometimes known as a quasi-stellar object, abbreviated QSO. This emission from a galaxy nucleus is powered by a supermassive black hole with a mass ranging from millions to tens of billions of solar masses, surrounded by a gaseous accretion disc. Gas in the disc falling towards the black hole heats up because of friction and releases energy in the form of electromagnetic radiation. The radiant energy of quasars is enormous; the most powerful quasars have luminosities thousands of times greater than that of a galaxy such as the Milky Way. Usually, quasars are categorized as a subclass of the more general category of AGN. The redshifts of quasars are of cosmological origin. The term originated as a contraction of "quasi-stellar '' tar-like' radio source"—because quasars were first identified during the 1950s as sources of radio-wave emission of unknown physical origin—and when identi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteor
A meteoroid () is a small rocky or metallic body in outer space. Meteoroids are defined as objects significantly smaller than asteroids, ranging in size from grains to objects up to a meter wide. Objects smaller than this are classified as micrometeoroids or space dust. Most are fragments from comets or asteroids, whereas others are collision impact debris ejected from bodies such as the Moon or Mars. When a meteoroid, comet, or asteroid enters Earth's atmosphere at a speed typically in excess of , aerodynamic heating of that object produces a streak of light, both from the glowing object and the trail of glowing particles that it leaves in its wake. This phenomenon is called a meteor or "shooting star". Meteors typically become visible when they are about 100 km above sea level. A series of many meteors appearing seconds or minutes apart and appearing to originate from the same fixed point in the sky is called a meteor shower. A meteorite is the remains of a met ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheshire
Cheshire ( ) is a ceremonial and historic county in North West England, bordered by Wales to the west, Merseyside and Greater Manchester to the north, Derbyshire to the east, and Staffordshire and Shropshire to the south. Cheshire's county town is the cathedral city of Chester, while its largest town by population is Warrington. Other towns in the county include Alsager, Congleton, Crewe, Ellesmere Port, Frodsham, Knutsford, Macclesfield, Middlewich, Nantwich, Neston, Northwich, Poynton, Runcorn, Sandbach, Widnes, Wilmslow, and Winsford. Cheshire is split into the administrative districts of Cheshire West and Chester, Cheshire East, Halton, and Warrington. The county covers and has a population of around 1.1 million as of 2021. It is mostly rural, with a number of towns and villages supporting the agricultural and chemical industries; it is primarily known for producing chemicals, Cheshire cheese, salt, and silk. It has also had an impact on popular culture, producing not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holmes Chapel
Holmes Chapel is a large village and civil parish in the unitary authority area of Cheshire East and the ceremonial county of Cheshire, England. Until 1974 the parish was known as Church Hulme. Holmes Chapel is about north of Crewe and south of Manchester. The population of the village was recorded as 5,605 as of the 2011 census. It has however grown due to a number of large housing developments. According to the Index of Deprivation, the village ranks as the 18th least deprived ward in the United Kingdom (out of 8,414). Holmes Chapel railway station has services to Manchester and Crewe, making the village convenient for commuters. Swettenham Meadows Nature Reserve lies east of the village and Goostrey lies to the north. The village has a number of public houses. There is a major supermarket (Aldi), several smaller supermarkets, a precinct, and numerous outlets including a fish and chip shop, off licence, pizzeria, estate agent, a chemist and a library, and a bakery. The to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
