noun

astronomy

uh-STRAHN-uh-mee

noun

The scientific study of stars, planets, and the wider universe, including their positions, motion, and physical properties.

"She majored in astronomy and now works at a research observatory."

How to Use Astronomy

Learner’s notes

In plain EnglishThe science of studying space, stars, and planets.

Easily confused with

astrology →

astronomies plural

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She majored in _____ and now works at a research observatory.

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