64 tetrahedrons, thin round struts, 3 cm

Eight stellated octahedra arranged in a cube, or 64 tetrahedrons, forming a space truss of octahedrons and tetrahedrons. This structure was popularized by Buckminster Fuller, who called it an octet truss, and by the physicist Nassim Haramein, who regards it as a basic structural building block of the universe.