Anania Shirakatsi
Anania Schirakatsi (Armenian Անանիա Շիրակացի, Ananias of Shirak also; * 610, † 685 ) was an Armenian scholar, mathematician and geographer.
He became famous for his two works of geography and cosmography Guide. He claimed that the earth is a sphere and that there was more than just heaven and earth. In the year 667 invited him Anastas, who was 661-667 Catholicos of the Armenian Church, at his official residence after Dvin. There Anania made of an annual calendar of movable or religious holidays.
An Armenian University bears his name in his honor. The Armenian State Award, the Anania - Schirakatsi Medal is awarded to scientists and inventors. In 2005, the Armenian Central Bank issued a Anania - Schirakatsi Memorial coin.