From M. O. Yuksel, author of In My Mosque, One Wish, and Ramadan Kareem, comes the first picture book biography of Ulugh Beg, an extraordinary Muslim man who charted the stars and discovered why seasons change and the length of a year, illustrated by Zelma Firdauzia. Ulugh Beg's curiosity burned as bright as the stars. He yearned to count every star in the sky, every day in a year, and to know why the seasons change. Fueled by his deep faith, Ulugh Beg's quest for knowledge led to the creation of new schools, the world's largest observatory and star catalog, and innovative tools to better chart the secrets of the skies. Although some doubted him, he never stopped searching for answers. And because of his determination, our understanding of the world has changed--forever.

With lyrical text by award-winning author M. O. Yuksel and captivating illustrations by Zelma Firdauzia, this portrait of a trailblazing Muslim astronomer reminds us just how far curiosity can take us.