Ulugbek’s Observatory

Ulugbek’s Observatory was constructed in 1428 in the suburbs of Samarkand. The project was developed personally by Ulugbek (a grandson of Tamerlane) and his master, great mathematician Kazi-zade Rumi. The observatory is one of the most valuable buildings of its type in the Middle Ages. During the functioning of the observatory, the best Central Asian scientists of that time made an invaluable contribution to the science: they composed a map of stellar sky (GurganianZidj) with the description of over 1000 stars, as well as identified the length of the year on Earth with an exact precision.