- Argentina - The World Factbook (cia.gov)
In 1816, the United Provinces of the Río de la Plata declared their independence from Spain. After Bolivia, Paraguay, and Uruguay went their separate ways, the area that remained became Argentina. European immigrants heavily shaped the country’s population and culture, with Italy and Spain providing the largest percentage of newcomers from 1860 to 1930. Until about the mid-20th century, much of Argentina’s history was dominated by periods of internal political unrest and conflict between civilian and military factions.
- Rigil Kentaurus (stars.astro.illinois.edu)
RIGIL KENTAURUS (Alpha Centauri) with PROXIMA CENTAURI (Alpha Cen C). Among the most famed stars of the entire sky, surely rival in renown to Sirius and Polaris even though not visible to much of the world’s population, is the “foot of the Centaur,” Rigil Kentaurus, “Rigil Kent,” the first star of Centaurus, probably much better known as Alpha Centauri or just Alpha Cen.
- Alpha Centauri (Wikipedia)
Alpha Centauri (α Centauri, Alpha Cen, or α Cen) is a triple star system in the southern constellation of Centaurus. It consists of three stars: Rigil Kentaurus (Alpha Centauri A), Toliman (B) and Proxima Centauri (C). Proxima Centauri is the closest star to the Sun at 4.2465 light-years (1.3020 pc).
