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It is 3ft by 2ft by 2ft. There’s a big scooper that scoops the regoalith every 5 seconds and dumps it into a small cart attached to the back of the Jackyack. Once the cart gets full, it pushes the dirt into the cleaning pipe. The useful dirt goes to the scientists. The extra big clumps fall into a special bin underneath the cleaning pipe to be examined even more carefully by the scientists in case there are important rocks or dirt inside it. The wheels have grips like car tire, but the grips are all different sizes to grip more tightly to the surface. Since there’s very little gravity on the moon, the tires are extra heavy so that they can stay on the ground. Jackyack gets its power from a solar panel. There is a beeping button on the robot which beeps when it needs to be recharged.