Photo: National Institute for Fusion Science, background-worthy large pic here
Large Hadron Collider who? Forget CERN's little science gizmo - the supersexy science machine title belongs to Japan's Large Helical Device, the world's largest superconducting stellarator* that employs a heliotron magnetic field. Via The Long Now Foundation
*A thingamajig used to contain hot plasma with magnetic field to sustain a controlled nuclear fusion reaction.