The mova globe rotates peacefully and silently using only the energy of room light and the force of the earth’s magnetic field. the mova globe is an inner globe that rotates and is contained within an outer shell made of very clear acrylic that does not rotate. the thin space between the inner globe and outer shell is filled with a safe, perfectly clear fluid that buoyantly supports the inner globe completely out of contact with the outer shell. this inner globe, floating and turning in a virtually friction-free environment and energized by light, is analogous to the earth itself. comes with stadard base, assymbly required.