Wang Sichao
Wang Sichao (; 1937 – 17 June 2016) was a Chinese astronomer and scholar. Between 1963 and 1999, he was a researcher at the Purple Mountain Observatory in Nanjing. Wang researched asteroids, meteors, comets, and unidentified flying objects. Early life and education Wang was born in 1937 in Rong County in Guangxi. His ancestral hometown is in Guangzhou in Guangdong. In his youth, he attended the primary and secondary schools affiliated with Sun Yat-sen University as well as the secondary school affiliated with South China Normal University. Wang attended the Peking University where he received an astrophysics degree from the Department of Geophysics. Career Upon graduation, in 1963 Wang joined the Purple Mountain Observatory as a research intern. He was promoted to an assistant research position, an associate researcher position, and then a researcher position. He retired in 1999 from the observatory. As the first promoter in China of conducting studies of Near-Earth objects an ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Rong County, Guangxi
Rongxian (; also called Rong Xian or Rong County) is a county in the southeast of Guangxi, China, bordering Guangdong province to the southeast. It occupies the northeast corner of the prefecture-level city of Yulin. Its population is approximately 700,000. Duqiao Mountain (), located in Rongxian, is a famous Taoist sanctuary.http://www.chinatoday.com.cn/English/e2002/e20029/rongxian.htm Other tourist sites include the Zhenwu Pavilion (). Transport * Luoyang–Zhanjiang Railway Climate See also * Yangmei, Rong County Yangmei () is a town located in Rong County, Yulin, Guangxi, China. It is named after the fruit ''yangmei'' (''Myrica rubra''). The town's population is approximately 5,3000. In May 2007, Affected by the protest of Bobai, Yangmei was the sit ... * Ramadan ibn Alauddin, a Muslim from Korea who governed Rong County in the 1340s References External linksRongxian Government website Counties of Guangxi Yulin, Guangxi {{Guangxi-geo-stub ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Astrophysics
Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline said, Astrophysics "seeks to ascertain the nature of the heavenly bodies, rather than their positions or motions in space–''what'' they are, rather than ''where'' they are." Among the subjects studied are the Sun, other stars, galaxies, extrasolar planets, the interstellar medium and the cosmic microwave background. Emissions from these objects are examined across all parts of the electromagnetic spectrum, and the properties examined include luminosity, density, temperature, and chemical composition. Because astrophysics is a very broad subject, ''astrophysicists'' apply concepts and methods from many disciplines of physics, including classical mechanics, electromagnetism, statistical mechanics, thermodynamics, quantum mechanics, relativity, nuclear and particle physics, and atomic a ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Xuyi County
Xuyi County () is under the administration of Huai'an, Jiangsu province, China. The southernmost of Huai'an's county-level divisions, it borders the prefecture-level cities of Suqian to the north and Chuzhou (Anhui) to the south and west. Xuyi is noted for production of crayfish. Etymology The meaning of Xuyi is debatable, and there are two major accounts. For one: sited on the top of a hill, the ancient city afforded an extensive view of the vicinity. In the ancient Chinese, "xu" means have one's eyes opened wide, while "yu" means look straight ahead. Thus, it was named after Xuyi, the posture of looking out. For another, it was named after Xuyi, an eastern hill outside the city. History This county was previously administered by Anhui province. When the ancient city of Sizhou whelmed in the Hongze Lake, its seat was transferred to the county in 1680 and then to the current seat of Si County in 1777. For the sake of managing the Hongze Lake, Xuyi was annexed to Jiangsu ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Halley's Comet
Halley's Comet or Comet Halley, officially designated 1P/Halley, is a List of periodic comets, 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 mecha ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Zhang Jiaxiang
Zhang Jiaxiang (; 30 October 1932 – 29 December 2019), also known as Chia-Hsiang Chang, is a Chinese astronomer affiliated with Purple Mountain Observatory, Chinese Academy of Sciences, and president of the Minor Planet Foundation at that observatory. He discovered 5384 Changjiangcun, an inner main-belt asteroid of the Hungaria family at the Purple Mountain Observatory in 1957 named after the village near Zhangjiagang, China. It is his only discovery credited by the Minor Planet Center under the name "C.-H. Chang". Biography Zhang Jiaxiang was born on 30 October 1932 in Nanjing, Jiangsu, Republic of China. In 1951, he first joined the Purple Mountain Observatory as a technician, supervised by director Zhang Yuzhe. In 1957, Zhang Yuzhe and Zhang Jiaxiang published a paper discussing the orbit of artificial satellites. From 1965 to 1972, Zhang led the project of orbit determination of the first Chinese artificial satellite and thereafter the systematic studies of the o ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Comet Hale–Bopp
Comet Hale–Bopp (formally designated C/1995 O1) is a comet that was one of the most widely observed of the 20th century and one of the brightest seen for many decades. Alan Hale and Thomas Bopp discovered Comet Hale–Bopp separately on July 23, 1995, before it became visible to the naked eye. It is difficult to predict the maximum brightness of new comets with any degree of certainty, but Hale–Bopp exceeded most predictions when it passed perihelion on April 1, 1997, reaching about magnitude −1.8. It was visible to the naked eye for a record 18 months, due to its massive nucleus size. This is twice as long as the Great Comet of 1811, the previous record holder. Accordingly, Hale–Bopp was dubbed the great comet of 1997. Discovery The comet was discovered independently on July 23, 1995, by two observers, Alan Hale and Thomas Bopp, both in the United States. Hale had spent many hundreds of hours searching for comets without success, and was tracki ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Wuxi
Wuxi (, ) is a city in southern Jiangsu province, eastern China, by car to the northwest of downtown Shanghai, between Changzhou and Suzhou. In 2017 it had a population of 3,542,319, with 6,553,000 living in the entire prefecture-level city area. By the end of 2019, the city's registered population was 5.0283 million. Wuxi is a prominent historical and cultural city of China, and has been a thriving economic center since ancient times as a production as an export hub of rice, silk and textiles. In the last few decades it has emerged as a major producer of electrical motors, software, solar technology and bicycle parts. The city lies in the southern delta of the Yangtze River and on Lake Tai, which with its 48 islets is popular with tourists. Notable landmarks include Lihu Park, the Mt. Lingshan Grand Buddha Scenic Area and its -tall Grand Buddha at Ling Shan statue, Xihui Park, Wuxi Zoo and Taihu Lake Amusement Park and the Wuxi Museum. The city is served by Sunan Shuofang ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Qin Mountains
The Qinling () or Qin Mountains, formerly known as the Nanshan ("Southern Mountains"), are a major east–west mountain range in southern Shaanxi Province, China. The mountains mark the divide between the drainage basins of the Yangtze and Yellow River systems, providing a natural boundary between North and South China and support a huge variety of plant and wildlife, some of which is found nowhere else on earth. To the north is the densely populated Wei River valley, an ancient center of Chinese civilization. To the south is the Han River valley. To the west is the line of mountains along the northern edge of the Tibetan Plateau. To the east are the lower Funiu and Dabie Shan which rise out of the coastal plain. The northern side of the range is prone to hot weather, however the physical barrier of the mountains mean that the land to the North has a semi-arid climate, with the lack of rich, fertile landscape that can not support a wealth of wildlife. The mountains also acted ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Ningqiang County
Ningqiang County () is a county and both the southwesternmost and westernmost county-level division of Shaanxi province, China, bordering both Sichuan and Gansu. It is under the administration of Hanzhong City. The source of the Han River is located in the county. Ningqiang is one of the counties with a sizable number of Qiang and Yi minorities. As a result of the 2008 Sichuan earthquake, 500 buildings in the county collapsed and seven people were killed, making it the worst hit area in Shaanxi. Administration The county executive, legislature and judiciary are in Hanyuan Subdistrict (); though like many shiretowns it is conventionally also known as ''Chengguan'' (), together with the CPC and PSB branches. ;Subdistricts () * Hanyuan Subdistrict Hanyuan may refer to: * Hanyuan County, in Sichuan, China * Hancheng, Shaanxi, formerly known as Hanyuan, a city in Shaanxi, China {{Disambig ... (), county seat * Gaozhaizi Subdistrict () ;Towns () the County oversees sixteen ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Chinese Academy Of Sciences
The Chinese Academy of Sciences (CAS); ), known by Academia Sinica in English until the 1980s, is the national academy of the People's Republic of China for natural sciences. It has historical origins in the Academia Sinica during the Republican era and was formerly also known by that name. Collectively known as the "Two Academies (两院)" along with the Chinese Academy of Engineering, it functions as the national scientific think tank and academic governing body, providing advisory and appraisal services on issues stemming from the national economy, social development, and science and technology progress. It is headquartered in Xicheng District, Beijing, with branch institutes all over mainland China. It has also created hundreds of commercial enterprises, Lenovo being one of the most famous. CAS is the world's largest research organization. It had 60,000 researchers in 2018 and 114 institutes in 2016, and has been consistently ranked among the top research organizati ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Jilin
Jilin (; alternately romanized as Kirin or Chilin) is one of the three provinces of Northeast China. Its capital and largest city is Changchun. Jilin borders North Korea ( Rasŏn, North Hamgyong, Ryanggang and Chagang) and Russia (Primorsky Krai) to the east, Heilongjiang to the north, Liaoning to the south, and Inner Mongolia to the west. Along with the rest of Northeast China, Jilin underwent an early period of industrialization. However, Jilin's economy, characterized by heavy industry, has been facing economic difficulties with privatization. This prompted the central government to undertake a campaign called " Revitalize the Northeast". The region contains large deposits of oil shale. Name The name "Jilin" originates from ''girin ula'' () , a Manchu phrase meaning "along the river", shortened to Kirin in English. This Manchu term was transcribed into ''jilin wula'' ( t , s ) in Chinese characters and shortened the first two characters, which ar ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Meteor Shower
A meteor shower is a celestial event in which a number of meteors are observed to radiate, or originate, from one point in the night sky. These meteors are caused by streams of cosmic debris called meteoroids entering Earth's atmosphere at extremely high speeds on parallel trajectories. Most meteors are smaller than a grain of sand, so almost all of them disintegrate and never hit the Earth's surface. Very intense or unusual meteor showers are known as meteor outbursts and meteor storms, which produce at least 1,000 meteors an hour, most notably from the Leonids. The Meteor Data Centre lists over 900 suspected meteor showers of which about 100 are well established. Several organizations point to viewing opportunities on the Internet. NASA maintains a daily map of active meteor showers. Historical developments A meteor shower in August 1583 was recorded in the Timbuktu manuscripts.Abraham, Curtis"Stars of the Sahara" ''New Scientist'', issue 2617,15 August 2007, page 39–41 I ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |