noun
Refers to a system of stars gravitationally bound together, such as a binary or multiple star system. Not to be confused with 太陽系 (solar system) or 銀河 (galaxy).
この恒星系には三つの太陽がある。
This star system has three suns.
連星は最も一般的な恒星系
Binary stars are one of the most common types of star systems.
A galaxy, which is a much larger structure containing billions of star systems.
Compound of 恒星 (fixed star) and 系 (system). The term is a modern scientific coinage.