noun which may take the genitive case particle 'no', noun
extrasolar; outside the solar system
Used in astronomy to describe objects or regions beyond our solar system, including trans-Neptunian objects. Often modifies nouns like 惑星 (planet) or 天体 (celestial body).
Exploration of extrasolar planets is advancing.
This celestial body is located outside the solar system.
Refers to the solar system itself, while 太陽系外 means 'outside the solar system'.
A more specific term for 'exoplanet', literally 'planet outside the (solar) system'.
exomoon; extrasolar moon
Compound of 太陽系 (solar system) + 外 (outside). The reading is the standard on'yomi combination.