Iraq

image for article on Seljuk Empire founding

Tughril and Chaghri Beg establish the Seljuk Empire across Central Asia

Seljuk Empire founders Tughril and Chaghri Beg, two brothers from a nomadic Turkic clan near the Aral Sea, captured Merv and Nishapur in 1037 C.E. and built a state that eventually stretched from the Aegean to the Hindu Kush. Rather than dismantle Persian civilization, they governed through it — a pattern of cultural fusion that echoed across later Islamic empires.

Babylonian star catalogue, for article on Babylonian star catalogue

Babylonian astronomers compile the earliest known star catalogues

Babylonian scribes created the earliest known star catalogues around 1200 B.C.E., pressing careful observations of the night sky into clay tablets during the Kassite era. Working in cuneiform, they turned scattered stargazing into organized, written records meant to outlast their authors. It was an early step toward the idea that the cosmos could be studied, shared, and built upon across generations.