A lunar rover includes a body, at least one collection device configured to collect lunar regolith, and a power supply. In some examples, the collection device includes at least one wall defining an opening and at least one plate positioned in the opening. The power supply is configured to apply a voltage difference across the collection device. In some examples, the lunar rover further includes a movable arm including an end connected to the body and another end connected to the collection device, at least one polarity sensor configured to detect a polarity of lunar regolith adjacent to the lunar rover, and a controller configured to control the power supply to apply a voltage difference across the collection device based on the detected polarity of the lunar regolith adjacent to the lunar rover. Other examples of lunar rovers are also disclosed.