Hansel and Gretel's breadcrumb trick inspires robotic exploration of caves on Mars and beyond
House hunting on Mars could soon become a thing, and researchers at the University of Arizona are already in the business of scouting real estate that future astronauts could use as habitats. Researchers in the UArizona College of Engineering have developed technology that would allow a flock of robots to explore subsurface environments on other worlds. "Lava tubes and caves would make per