Tashkent vs Vega

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Tashkent (; Russian pronunciation: [tɐʂˈkʲent]; Russian: Ташкент, tr. Tashkent), or Toshkent (Uzbek pronunciation: [tɒʃˈkent]; Uzbek: Toshkent, Тошкент, تاشكینت‎), is the capital and largest city of Uzbekistan, as well as the most populous city in ex-Soviet Central Asia, with a population in 2018 of 2,485,900. It is in northeastern Uzbekistan, near the border with Kazakhstan. Before Islamic influence started in the mid 8th century AD, Tashkent was influenced by the Sogdian and Turkic cultures. After Genghis Khan destroyed it in 1219, it was rebuilt and profited from the Silk Road. From the 18th to the 19th century, the city became an independent city-state, before being re-conquered by the Khanate of Kokand.

In 1865, Tashkent fell to the Russian Empire, and became the capital of Russian Turkestan. In Soviet times, it witnessed major growth and demographic changes due to forced deportations from throughout the Soviet Union. Much of Tashkent was destroyed in the 1966 Tashkent earthquake, but it was rebuilt as a model Soviet city. It was the fourth-largest city in the Soviet Union at the time, after Moscow, Leningrad and Kyiv. Today, as the capital of an independent Uzbekistan, Tashkent retains a multiethnic population, with ethnic Uzbeks as the majority. In 2009, it celebrated its 2,200 years of written history.

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