In China, the greatest astronomer of the Middle Kingdom was Tcheou Kong, the brother of Emperor Wou Wang who lived in the eleventh century before our era. He built an …
Astronomy is learned during the last years of university but it often takes more than 5 years of study to become an astronomer. It is even insufficient because astronomy is …
For thousands of years men believed that the Moon was so remote that it was inaccessible. When someone was told that she was in the moon, they meant that she …
In the Muslim world, whose intellectual centers in the Middle Ages were located in Damascus (Syria) and Baghdad (Iraq) and Samarkand (Uzbekistan), it was inconceivable that theologians would only deal …