Moon Vacuum Sucks Up Regolith

My robot is the Vacuum Rover. It is 2 feet tall and 3 feet wide circular vacuum that works by moving around and sucking up dirt. It uses big thick bristles to suck the dirt. It also has wheels between the bristles to help it move. It is a giant moon vacuum! It also has a scoop attachment to pick up moon rocks. There is a separate section for dirt and rocks. After it fills up its body which holds six cubic feet of regolith, it returns and opens up its duster outer door to dump the dust. It also has two tongues that pop out of the robot and clean the dust off the robot after each dust dump. These tongues slide back in and the dirt is scraped back into the body. When he is done he goes back to his solar powered charging station for more energy.