There is only so much you can launch into space, much less land on planets like Mars. Space, weight, and budget all conspire against having more rolling laboratories roving the planet. Not that you'd want to depend solely on a rover either. Big and expensive, they are hardly qualified for cramped spaces and more treacherous terrain. Which is why NASA's Jet Propulsion Laboratories or JPL has been developing a companion robot for rovers that would serve as research scouts. But to make them compact and lightweight, the engineers and scientists took inspiration from the foldable properties of paper.