Celestial bodies

行星
Planet

A large body orbiting a star and not shining by itself.

Five of the eight are naked-eye: Mercury, Venus, Mars, Jupiter, Saturn.

Related terms

The Moon — Earth's only natural satellite, 3474 km across.
Comet — An icy body that grows a tail near the Sun.
Asteroid — Small rocky bodies, mostly between Mars and Jupiter.
Milky Way — Our own galaxy seen edge-on as a band of light.