lunar vacuum

My lunarbot is like a little vacuum that basically sucks up the regolith (lunar soil) and puts it in a container that is saved and can be tested. The bot is able to be powered at all times with the solar panels on top. In case it runs out of power or is about to, the bot will head back to the lunar base to charge. The way it moves is by weight the more weight on front the faster or slower it goes to soil is saved inside a tube that holds the regolith, that's the weight that will make it move faster or slower. The back wheels have spikes on them which allows you to stay on the ground and easily go through craters safely. The bot is also able to be used manually like a normal vacuum.