The article focuses on the three-metre-tall rinned orb housed in a warehouse at the University of Maryland at College Park, Maryland in that aims to imitate Earth's core. It says that the sphere, part of the two-million U.S. dollar project which is loaded with 13,000 kilograms of liquid sodium will start whirling around in early 2012. It states that the orb is comprised of two concentric spheres powered by a separate motor to rotate independently from the other.