Barrack Hussein Obama II, knows simply as Barack Obama, is the 44th president of the United States and a person recognized all around the world. Barack Obama was born in Honolulu, Hawaii, on the 4th of August 1961. He is 48 years old. His mother was American, and his father was Kenyan. When he was six years old he moved to Indonesia together with his mother and stepfather. Four years later he moved back to Hawaii and lived there with his grandparents, who were very important people in his life. After graduating from high school, Obama studied at Occidental College in Los Angeles and later...
Nicolaus Copernicus (1473 - 1543 r.) Nicolaus Copernicus, Polish astronomer-large, founder of the theory of heliocentrism. Proved that the earth and planets revolve around a stationary Sun. Biography: Copernicus? Born in Torun, February 19, 1473 year in a merchant family of Nicholas and Barbara. According to research on the origin of the family Kopernik, it comes from Silesia. He was a Polish astronomer, mathematician, lawyer, economist and strategist, physician, astrologer, canon of Warmia and Catholic clergy. His most important work is the turnover of Heavenly Spheres (De revolutionibus orbium coelestium), which described the heliocentric vision of the world in sufficient detail to enable it to become a scientifically useful. Based on observations of the sky said, that the earth revolves around the sun. It was a breakthrough discovery for the development of modern science. Previously it was thought that, the other planets orbit a motionless earth.