Fairy-tale-inspired rovers could use “breadcrumbs” to map caves on Mars
Exploring the depths of an unmapped cave system is a daunting enough prospect on its own, but think how risky it would be to do so on another planet such as Mars. That's why a new system is in the works, which would use "breadcrumb"-dropping rovers to do the job.Currently being developed by a University of Arizona team led by Assoc. Prof. Wolfgang Fink, the system incorporates a ground-going "mother" rover which would carry several smaller rovers to the entrance of a cave system. Those smaller autonomous rovers would then…