Lunar rover

Lunar rover

. The battery-powered lunar rovers, used in the last three Apollo missions, could carry two astronauts and all their equipment for thousands of meters across the lunar surface. Because there is no substantial atmosphere, water or weather on the Moon, both the rover and the footprints in the lunar soil may last for millions of years. By that time micrometeorites will have pitted the rover and erased the footprints. (Courtesy of NASA.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University