Vega vs Wuhan

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Vega is the brightest star in the northern constellation of Lyra. It has the Bayer designation α Lyrae, which is Latinised to Alpha Lyrae and abbreviated Alpha Lyr or α Lyr. This star is relatively close at only 25 light-years from the Sun, and, together with Arcturus and Sirius, one of the most luminous stars in the Sun's neighborhood. It is the fifth-brightest star in the night sky, and the second-brightest star in the northern celestial hemisphere, after Arcturus. Vega has been extensively studied by astronomers, leading it to be termed "arguably the next most important star in the sky after the Sun". Vega was the northern pole star around 12,000 BC and will be so again around the year 13,727, when its declination will be +86° 14′. Vega was the first star other than the Sun to be photographed and the first to have its spectrum recorded. It was one of the first stars whose distance was estimated through parallax measurements. Vega has functioned as the baseline for calibrating the photometric brightness scale and was one of the stars used to define the zero point for the UBV photometric system.

Vega is only about a tenth of the age of the Sun, but since it is 2.1 times as massive, its expected lifetime is also one tenth of that of the Sun; both stars are at present approaching the midpoint of their life expectancies. Vega has an unusually low abundance of the elements with a higher atomic number than that of helium. Vega is also a variable star that varies slightly in brightness. It is rotating rapidly with a velocity of 236 km/s at the equator. This causes the equator to bulge outward due to centrifugal effects, and, as a result, there is a variation of temperature across the star's photosphere that reaches a maximum at the poles. From Earth, Vega is observed from the direction of one of these poles.Based on an observed excess emission of infrared radiation, Vega appears to have a circumstellar disk of dust. This dust is likely to be the result of collisions between objects in an orbiting debris disk, which is analogous to the Kuiper belt in the Solar System. Stars that display an infrared excess due to dust emission are termed Vega-like stars.

Source: Wikipedia

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Wuhan (simplified Chinese: 武汉; traditional Chinese: 武漢, [ù.xân] (listen)) is the capital of Hubei Province in the People's Republic of China. It is the largest city in Hubei and the most populous city in Central China, with a population of over 11 million, the ninth-most populous Chinese city and one of the nine National Central Cities of China.The name "Wuhan" came from the city's historical origin from the conglomeration of Wuchang, Hankou and Hanyang, which are collectively known as the "Three Towns of Wuhan" (武汉三镇). It lies in the eastern Jianghan Plain, at the confluence of the Yangtze river and its largest tributary, the Han River and is known as "Nine Provinces' Thoroughfare" (九省通衢).Wuhan is considered by some to be one of the potential sites of the pivotal Battle of the Red Cliffs, which stopped warlord Cao Cao's incursion into southern China at the end of the Eastern Han dynasty. Other historical events taking place in Wuhan include the Wuchang Uprising of 1911, which led to the downfall of the Qing dynasty and the establishment of the Republic of China. Wuhan was briefly the capital of China in 1927 under the left wing of the Kuomintang (KMT) government led by Wang Jingwei. The city later served as the wartime capital of China for ten months in 1937 during the Second Sino-Japanese War. SARS-CoV-2, a novel coronavirus that caused the COVID-19 pandemic, was first identified in Wuhan in December 2019.Wuhan is considered the political, economic, financial, commercial, cultural and educational center of Central China. It is a major transportation hub, with dozens of railways, roads and expressways passing through the city and connecting to other major cities. Because of its key role in domestic transportation, Wuhan is sometimes referred to as "the Chicago of China" by foreign sources.

The "Golden Waterway" of the Yangtze River and the Han River traverse the urban area and divide Wuhan into the three districts of Wuchang, Hankou and Hanyang. The Wuhan Yangtze River Bridge crosses the Yangtze in the city. The Three Gorges Dam, the world's largest power station in terms of installed capacity, is located nearby. Historically, Wuhan has suffered risks of flooding, prompting the government to alleviate the situation by introducing ecologically friendly absorption mechanisms.While Wuhan has been a traditional manufacturing hub for decades, it is also one of the areas promoting modern industrial changes in China. Wuhan consists of three national development zones, four scientific and technological development parks, over 350 research institutes, 1,656 high tech enterprises, numerous enterprise incubators and investments from 230 Fortune Global 500 firms. It produced GDP of US$22.4 billion in 2018. The Dongfeng Motor Corporation, an automobile manufacturer, is headquartered in Wuhan. The city is home to multiple notable institutes of higher education, including Wuhan University and the Huazhong University of Science and Technology. Wuhan is also one of the top city in the world by scientific research and it ranks 13th globally and 4th in China (after Beijing, Shanghai and Nanjing). In 2017, Wuhan was designated as a Creative City by UNESCO, in the field of design. Wuhan is classified as a Beta- (global second tier) city together with other 7 cities in China, including Changsha, Dalian, Jinan, Shenyang, Xiamen, Xi'an and Zhengzhou by the Globalization and World Cities Research Network.

Source: Wikipedia