+**Theoretical Astronomy** is the branch of [Astronomy](/wiki/astronomy) that uses [Physics](/wiki/physics) and [Mathematics](/wiki/mathematics) to understand the universe. It develops models and theories to explain celestial phenomena and predict cosmic behavior, often without direct observation.
+## See also
+- [Astrophysics](/wiki/astrophysics)
+- [Cosmology](/wiki/cosmology)
+- [Celestial Mechanics](/wiki/celestial_mechanics)