- planetEach of the seven major bodies which move relative to the fixed stars in the night sky—the Moon, Mercury, Venus, the Sun, Mars, Jupiter and Saturn.
- interstellar planeta planetary-mass object which has either been ejected from its system or was never gravitationally bound to any star or other such object, and that therefore orbits the galaxy directly.
- planetalityMembership of a particular planet or moon, by origin, birth, naturalization, ownership, allegiance or otherwise.