FusionDex

These Pokémon drift across night skies, kept aloft by their latent telekinetic powers. When the star-like part of their backs rotates, the core of their bodies will glow brightly and generate a powerful gravitational field.

It apparently does not feel the pull of gravity because it supports itself with psychic power. People in ancient times imagined that Starvoir were transformed from the reflections of stars that twinkled on gentle waves at night.