Recreate a lunar landing in your kitchen with this Zero-Gravity Fridge Rover mini science kit.   The gravity defying Zero-Gravity Fridge Rover will move over any magnetic surface with amazing ease. All you have to do is wind it up and watch it go. Inside the Rover’s clockwork mechanism is a coiled spring that winds more tightly as you turn the handle; this stores energy in the spring (potential energy). When you let go, the spring uncoils, releasing the energy again and making the wheels turn (kinetic energy). The wheels grip the surface because the magnet pulls the Zero-Gravity Fridge Rover firmly against the fridge. A magnet and wind-up vehicle in one gadget, this toy ensures that your refrigerator door stays interesting.  Great as stocking stuffer or party favor, the Zero-Gravity Fridge Rover is a great gift for young and old minds alike. Give the gift of science with toys that foster curiosity and encourage learning. Recommended for children aged 8 and up.