Quetelet was a Belgian astronomer, mathematician, statistician and sociologist. Kepler is named after the German mathematician, astronomer, and astrologer Johannes Kepler. The King was a proficient amateur astronomer, who collaborated with the best French astronomers. It is named after the 19th-century German astronomer and mathematician Friedrich Bessel. Rubaiyat refers to Rubaiyat of Omar Khayyam, Persian mathematician, astronomer, and poet. Tadashi Daiba's father, an astronomer and scientist. The Roman poet Lucan and the Greek astronomer and geographer Ptolemy gave their precise locations. According to the astronomer and mathematician Aryabhata the Kali Yuga started in 3102 BCE. Tycho was well known in his lifetime as an astronomer, astrologer, and alchemist. There he continued his work as an astronomer and telescope maker. The astrologer and astronomer Ptolemy lived in Alexandria. Another astronomer, Aristarchos of Samos developed a heliocentric system. Omarkhayyam discovered by Soviet astronomer Lyudmila Zhuravlyova in 1980. In his time, he was also a preeminent astronomer and physician. It is named after the pioneering radio astronomer Karl Jansky.