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Astronomical Society Of India
The Astronomical Society of India (ASI) is an Indian society of professional astronomers and other professionals from related disciplines. It was founded in 1972, with Vainu Bappu being the founder President of the Society, and as of 2010 has a membership of approximately 1000. Its registered office is at the Astronomy Department, Osmania University, Hyderabad, India. Its primary objective is the promotion of Astronomy and related branches of science. It organises meetings, supports and tries to popularise Astronomy and related subjects and publishes the Bulletin of the Astronomical Society of India. Prof. Rajaram Nityananda of the National Centre for Radio Astrophysics at the Tata Institute of Fundamental Research, Ganeshkhind, Pune is the Society's President. The Society makes a series of awards, the most prestigious of which is the ''Prof. M. K. Vainu Bappu Gold Medal'' awarded once every two years to "honour exceptional contributions to Astronomy and Astrophysics by young ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomer
An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, natural satellite, moons, comets and galaxy, galaxies – in either observational astronomy, observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, Sun, solar astronomy, the Star formation, origin or stellar evolution, evolution of stars, or the galaxy formation and evolution, formation of galaxies. A related but distinct subject is physical cosmology, which studies the Universe as a whole. Types Astronomers usually fall under either of two main types: observational astronomy, observational and theoretical astronomy, theoretical. Observational astronomers make direct observations of Astronomical object, celestial objects and analyze the data. In contrast, theoretical astronomers create and investigate C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nissim Kanekar
Nissim Kanekar (born 11 September 1973) is an Indian astrophysicist, cosmologist and a professor at National Centre for Radio Astrophysics of Tata Institute of Fundamental Research. Known for his research on the evolution of the electron proton mass ratio, Kanekar is a member of the International Astronomical Union and a recipient of Swarna Jayathi Fellowship of the Department of Science and Technology. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, for his contributions to physical sciences in 2017. Biography Nissim Kanekar, born on 11 September 1973 in Mumbai in the western Indian state of Maharashtra, did his undergraduate studies at Ramnarain Ruia College of Mumbai University and, after earning a graduate degree (BSc) in physics in 1991, moved to Savitribai Phule Pune University for his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akash Mitra Mandal
Akashmitra Mandal is an amateur astronomers' organization (Regd.No. MAH/557/96/Thane) in India. Its objective is to popularize astronomy and induce students, enthusiasts to make useful contributions in the field of astronomical research. It also aims to carry systematic study of the subject. It was the first organization in India to organize the amateur astronomers' Meet in India. Since its establishment in August 1986, many seminars, workshops, Basic Astronomy Courses for students and elders, Sky Watching Programmes were conducted by the organization. It has also enhanced the astronomical literature in India by publishing the "Directory of Persons Associated with Astronomy in India". The important milestones in the brief tenure of Akashmitra Mandal are marked by some major contributions to the society in the field of astronomy in general and information dissemination in particular. Apart from the publication of Directory of Persons Associated with Astronomy in India, Akashmitra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Evershed
John Evershed CIE FRS FRAS (26 February 1864 – 17 November 1956) was an English astronomer. He was the first to observe radial motions in sunspots, a phenomenon now known as the Evershed effect. Biography Evershed was born in Gomshall, Surrey to John and Sophia (née Price) Evershed. He made the discovery which bears his name while at Kodaikanal Observatory in 1909. After retirement in 1923 he set up a private observatory at Ewhurst, Surrey and built a large spectroheliograph of special design and another with high-dispersion liquid prism. He continued to study the wave-lengths of H and K lines in prominences, giving values of the solar rotation at high levels in different latitudes and at different phases of the solar cycle. Work continued until 1950 when the observatory closed and he presented some of his instruments to the Royal Greenwich Observatory at Herstmonceux. In the autumn of 1890 was a founding member of the British Astronomical Association. He directed i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sidney Gerald Burrard
Sir Sidney Gerald Burrard, 7th Baronet, (12 August 1860 – 16 March 1943) was a British army officer who served as Surveyor General of India and played a major role in the Great Trigonometrical Survey's work in the Himalayas and identified the source of errors resulting from the displacement of the plumbline by the mountains. Early life Burrard was born on the Isle of Wight in a family of eminence, his father being Lieutenant-Colonel Sidney Burrard of the Grenadier Guards. Their home at The Mount had been built by his grandfather, The Reverend Sir George Burrard. He was educated at school in Lymington and then Uppingham School from 1873 where he showed his mathematical talents. In 1874 he moved to Wellington College where again he excelled at mathematics which led his father to decide that he was suited for the Royal Engineers. Career He received a commission in the Royal Engineers on 6 April 1879 and trained at the School of Military Engineering at Chatham. He sailed to Indi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barrackpore
Barrackpore (also known as Barrackpur) is a city and a municipality of urban Kolkata of North 24 Parganas district in the Indian state of West Bengal. It is also a part of the area covered by Kolkata Metropolitan Development Authority (KMDA). It is the headquarters of the Barrackpore subdivision. Etymology The name Barrackpore may have originated from the English word barracks, as it was the site of the first cantonment of the British East India Company. Alternatively, the '' Ain-i-Akbari'' suggests that the name comes from "Barbakpur". ''Manasa Vijay'', written by Bipradas Pipilai, refers to Talpukur (a place in Barrackpore) as "Charnak". History The earliest references to the Barrackpore region are found in the writings of the Greek navigators, geographers, chronicles and historians of the 1st century BC to the 3rd century AD. These authors generally referred to the country of a people variously called the Gangaridai (also Gangaridae or Gandaritai). By the 15th and 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kolkata
Kolkata (, or , ; also known as Calcutta , the official name until 2001) is the capital of the Indian state of West Bengal, on the eastern bank of the Hooghly River west of the border with Bangladesh. It is the primary business, commercial, and financial hub of Eastern India and the main port of communication for North-East India. According to the 2011 Indian census, Kolkata is the seventh-most populous city in India, with a population of 45 lakh (4.5 million) residents within the city limits, and a population of over 1.41 crore (14.1 million) residents in the Kolkata Metropolitan Area. It is the third-most populous metropolitan area in India. In 2021, the Kolkata metropolitan area crossed 1.5 crore (15 million) registered voters. The Port of Kolkata is India's oldest operating port and its sole major riverine port. Kolkata is regarded as the cultural capital of India. Kolkata is the second largest Bengali-speaking city after Dhaka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable Star
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes with time. This variation may be caused by a change in emitted light or by something partly blocking the light, so variable stars are classified as either: * Intrinsic variables, whose luminosity actually changes; for example, because the star periodically swells and shrinks. * Extrinsic variables, whose apparent changes in brightness are due to changes in the amount of their light that can reach Earth; for example, because the star has an orbiting companion that sometimes eclipses it. Many, possibly most, stars have at least some variation in luminosity: the energy output of the Sun, for example, varies by about 0.1% over an 11-year solar cycle. Discovery An ancient Egyptian calendar of lucky and unlucky days composed some 3,200 years ago may be the oldest preserved historical document of the discovery of a variable star, the eclipsing binary Algol. Of the modern astronomers, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moon
The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of Australia). The Moon is a planetary-mass object with a differentiated rocky body, making it a satellite planet under the geophysical definitions of the term and larger than all known dwarf planets of the Solar System. It lacks any significant atmosphere, hydrosphere, or magnetic field. Its surface gravity is about one-sixth of Earth's at , with Jupiter's moon Io being the only satellite in the Solar System known to have a higher surface gravity and density. The Moon orbits Earth at an average distance of , or about 30 times Earth's diameter. Its gravitational influence is the main driver of Earth's tides and very slowly lengthens Earth's day. The Moon's orbit around Earth has a sidereal period of 27.3 days. During each synodic period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteoroid
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 meteoroid th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Astronomical Association
The British Astronomical Association (BAA) was formed in 1890 as a national body to support the UK's amateur astronomers. Throughout its history, the BAA has encouraged observers to make scientifically valuable observations, often in collaboration with professional colleagues. Among the BAA's first presidents was Walter Maunder, discoverer of the seventeenth century dearth in sunspots now known as the Maunder Minimum which he achieved by analysing historical observations. Later, this spirit of observing the night sky scientifically was championed by George Alcock, who discovered five comets and five novae using nothing more than a pair of binoculars. The BAA continues to contribute to the science of astronomy, even despite modern competition from space-based telescopes and highly automated professional observatories. Modern digital sensors, coupled with techniques such as lucky imaging, mean that even modest amateur equipment can rival what professional observatories could hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halley's Comet
Halley's Comet or Comet Halley, officially designated 1P/Halley, is a short-period comet visible from Earth every 75–79 years. Halley is the only known short-period comet that is regularly visible to the naked eye from Earth, and thus the only naked-eye comet that can appear twice in a human lifetime. Halley last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061. Halley's periodic returns to the inner Solar System have been observed and recorded by astronomers around the world since at least 240 BC. But it was not until 1705 that the English astronomer Edmond Halley understood that these appearances were reappearances of the same comet. As a result of this discovery, the comet is named after Halley. During its 1986 visit to the inner Solar System, Halley's Comet became the first comet to be observed in detail by spacecraft, providing the first observational data on the structure of a comet nucleus and the mechanism of coma and tail f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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