noun
planetary probe; interplanetary explorer; rover
Refers to unmanned spacecraft designed to explore planets, moons, or other bodies in the solar system. Can include orbiters, landers, and rovers.
NASAの惑星探査機が火星の表面を詳しく調べている。
NASA's planetary probe is examining the surface of Mars in detail.
この惑星探査機は木星の大気を観測するために打ち上げられた。
This interplanetary explorer was launched to observe the atmosphere of Jupiter.