Titan's Tiny Visitor: Nestled behind its 3-meter-diameter front shield that protects the battery-powered probe from heat during the initial entry phase, Huygens packs a suite of instruments designed to unlock the secrets of Titan's atmosphere and surface. Cameras will take pictures of Titan's cloud cover and surface, and a microphone will listen to the moon's wind, while other instruments will report back on the chemical, thermal, and electrical properties of the atmosphere. After touchdown, a small bundle of sensors will examine the surface.