Imagine a physical object that floats through the air, unconstrained by gravity, which can move freely to display the motion of a planet in orbit or the flight path of an airplane. We introduce ZeroN, a new tangible interface element based on a levitated object that can be moved freely in a three-dimensional space to represent and control the dynamic status of computation. Users can see, feel, and control computation through interaction with ZeroN. One can place and move the ZeroN in the air to animate characters' movements or simulate physics in a tangible form.