# What are celestial mechanics?

##### 1 Answer

#### Answer:

*Celestial Mechanics* is the study of planetary motion.

#### Explanation:

Celestial mechanics is the set of equations satisfied by planets in their orbit around the sun. It also deals with solutions to these equations. The two-body problem has solutions that are analytical, that is the system of equations is integrable. With the three-body problem, that is no longer the case.