Accra vs Vega

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Accra (; Twi: Nkran; Dagbani: Ankara; Ga: Ga or Gaga) is the capital of Ghana covering an area of 225.67 km2 (87.13 sq mi) with an estimated urban population of 4.2 million as of 2020. It is organized into 12 local government districts – 11 municipal districts and the Accra Metropolitan District, which is the only district within the capital to be granted city status. "Accra" usually refers to the Accra Metropolitan Area, which serves as the capital of Ghana, while the district which is within the jurisdiction of the Accra Metropolitan Assembly is distinguished from the rest of the capital as the "City of Accra". In common usage, however, the terms "Accra" and "City of Accra" are used interchangeably. The intersection of the Lafa stream and Mallam junction serves as the western border of Accra, the Great Hall of the University of Ghana forms Accra's northern border, while the Nautical College forms the eastern border. The Gulf of Guinea forms the southern border. Formed from the merger of distinct settlements around British Fort James, Dutch Fort Crêvecoeur (Ussher Fort), and Danish Fort Christiansborg as Jamestown, Usshertown, and Christiansborg respectively, Accra served as the capital of the British Gold Coast between 1877 and 1957 and has since transitioned into a modern metropolis. The capital's architecture reflects this history, ranging from 19th-century colonial architecture to modern skyscrapers and apartment blocks.

Accra is the Greater Accra Region's economic and administrative hub, and serves as the anchor of the larger Greater Accra Metropolitan Area (GAMA), which is inhabited by about 4 million people, making it the thirteenth-largest metropolitan area in Africa. Strategic initiatives, such as transportation, are coordinated between the local government authorities, while the Accra Metropolitan Assembly, based in West Ridge, is responsible for the administration of the 60 km2 (23 sq mi) City of Accra only.Accra is the most densely populated city in Ghana. The central business district of Accra contains the city's main banks and department stores, as well as an area known as the Ministries, where Ghana's government administration is concentrated. Economic activities in Accra include the financial and commercial sectors, fishing, and the manufacture of processed food, lumber, plywood, textiles, clothing, and chemicals. Tourism is becoming a thriving source of business for those in arts and crafts, historical sites, and local travel and tour agents. The Oxford Street in the district of Osu has grown to become the hub of business and nightlife in Accra.In 2020, the Globalization and World Cities Research Network think tank designated Accra as a "Gamma -" level global city, indicating a growing level of international influence and connectedness.

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