Kabul vs Vega

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Kabul (Pashto: کابل, romanized: Kābəl; Dari: کابل, romanized: Kābol) is the capital and largest city of Afghanistan, situated in the eastern section of the country. It is also a municipality, forming part of the greater Kabul Province, and divided into 22 districts. Based on estimates in 2020, the population of Kabul is 4.222 million, which includes all the significant ethnic groups of Afghanistan. Afghanistan's only city with a population of over 1 million, Kabul serves as its political, cultural and economical center. Rapid urbanization has made Kabul the world's 75th biggest city.Kabul is situated high up in a narrow valley between the Hindu Kush mountains, with an elevation of 1,790 metres (5,873 ft) making it one of the greatest capitals in the world. The city is said to be over 3,500 years old, said since at the time of the Achaemenid Empire. Located at crossroads in Asia - approximately halfway between Istanbul in the west and Hanoi in the east - it's in a strategic location along the trade routes of South and Central Asia, and a key location of the historical Silk Road. It has been part of the Achaemenids followed by the Seleucids, Mauryans, Kushans, Kabul Shahis, Saffarids, Samanids, Ghaznavids, Ghurids, Khwarazmians, Qarlughids, Khaljis, Timurids, Mughals, and Hotaks, until eventually becoming part of the Durrani Empire (also known as the"Afghan Empire") in 1747.

Kabul became the capital of Afghanistan in 1776, during the reign of Timur Shah Durrani, the son of Ahmad Shah Durrani. From the early 19th century, the British occupied the city, but after launching foreign relations, they were forced to withdraw all forces from Afghanistan. The city was occupied by the Soviets in 1979 but they too abandoned it after the 1988 Geneva Accords were signed. A civil war in the 1990s involving various rebel groups destroyed much of the city, leading to many casualties. From late 2001 the city has been continuously rebuilt.Kabul is well known for its gardens, bazaars, and palaces, well known examples being the Gardens of Babur and Darul Aman Palace. It was also formerly a mecca for young western hippies. Despite frequent terrorist attacks in the city, mainly by Taliban insurgents, the city continues to develop and was the fifth largest city in the world as of 2012.

Source: Wikipedia

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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