English · Science & Technology
astronomy
/əˈstrɒn.ə.mi/
[/əˈstrɒn.ə.mi/]
study of space
Intermediatenoun
Definition
The scientific study of stars, planets, galaxies, and other objects beyond the Earth's atmosphere.
Example
Thanks to astronomy, we now know that there are billions of galaxies far beyond our own.
Thanks to astronomy, we now know that there are billions of galaxies far beyond our own.
Etymology
From Greek 'astron' (star) and 'nomos' (law, arrangement), via Latin 'astronomia'.
How & Where It’s Used
Distinct from astrology; concerns the physical study of celestial objects.