Moon Walker

摘要

To build and supply a lunar base, astronauts will need heavy-duty space trucks for transporting gear. There's just one problem: no roads. That's why NASA engineers designed the rover they call ATHLETE fill-Terrain Hex-Limbed Extra-Terrestrial Explorer)-to handle any terrain, whether dusty, rocky, or crater-y.The key is the rover's six bendable spider legs and wheeled feet. On smooth surfaces, it rolls on those wheels; when it runs into an obstacle it can't clear, it simply steps over it.