Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.
Cairo (القاهرة) is the capital of Egypt.
Egyptians (مَصريين;; مِصريّون; Ni/rem/en/kīmi) are an ethnic group native to Egypt and the citizens of that country sharing a common culture and a common dialect known as Egyptian Arabic.
Shihāb al‐Dīn ibn al‐Majdī (شهاب الدين بن المجدي; 1359–1447 CE) was an Egyptian mathematician and astronomer.
Mathematics (from Greek μάθημα máthēma, "knowledge, study, learning") is the study of such topics as quantity, structure, space, and change.