Here are some of the ancient observatories that enabled people to learn a great deal about space long before the invention of the first telescope in the early 17th century.

Observatory

Ulugh Beg Observatory in Samarkand, Uzbekistan

The Ulugh Beg Observatory was built in the 1420s at the behest of Ulugh Beg, the grandson of Tamerlane. The structure is the last of its kind dating from the Islamic medieval period. Astronomers including Jamshid al-Kashi, Ali Qushji, and Ulugh Beg himself worked at the observatory. Mostly known for his scientific pursuits, Ulugh Beg was an unpopular ruler. Eventually, his son tried and then beheaded Ulugh Beg after losing several battles in 1449. The observatory was destroyed in the same year, and the other astronomers were exiled. Later, Ali Qushji published Ulugh Beg’s extensive star catalog containing at least 1,018 stars. The ruins were discovered in 1908, and the observatory was rebuilt in 1970, operating as The Ulug Beg Observatory Museum.
ertanavci

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