Below left is Johfra Bosschart's Sagittarius. Half-man, half beast, the centaur taps the god's lightning and his purpose is heavenward, for

Sagittarius rules spiritual thought and the higher mind. Below right is Io, Jupiter's molten, volcanic moon. Io orbits a planet 318 times

as massive as the Earth at the same distance as the Earth's moon, causing 330-foot tides in Io's solid surface as it rotates.