几乎完全由水冰构成，密度仅 0.98 g/cm³。
几乎完全由水冰构成，密度仅 0.98 g/cm³。
Tethys (土卫三) is a moon orbiting Saturn with a radius of 531.1 km and surface gravity of 0.15 m/s². You can land on and walk on Tethys in Solar Wanderer. Explore Tethys in real-time 1:1 scale at Solar Wanderer.
点击上方按钮打开 Solar Wanderer，应用会自动飞向土卫三。
Click the button above to open Solar Wanderer — the app will automatically fly to Tethys.