Etymology: from the Greek 

ἀστήρ (astḗr) = “star” + -νομία (-nomía) = “law, study” → “the study of the stars”

Meaning the science that studies stars and the phenomena of the Universe. Astronomy studies stars, planets, galaxies and other celestial bodies, their composition, movements, origins and evolution.

What is it used for: it helps us understand the Universe and has contributed to the development of calendars and agriculture, navigation, time measurement, technology and the study of Earth.

What have we learned: Astronomy therefore has both cultural and scientific value and a broader socioeconomic impact, demonstrating how fundamental research can generate unexpected applications, technological innovation and benefits for society.

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