orbit
/ˈɔːr.bɪt/noun
CEFR B1
Definition
The curved path that one object in space travels around another, such as a planet around the sun.
Each planet’s orbit is a different size and takes a different amount of time to complete — which is exactly why it’s unusual for several of them to appear lined up from Earth’s point of view, even briefly.
Synonyms
path
revolution