A trick inspired by Hansel and Gretel could help rovers explore other worlds
Sensors dropped like bread crumbs would send back any data collected by waylaid spacecraft
![An illustration of a rover exploring a lava tube with light streaming through the top](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/03/030723_ag_rover_feat.jpg?fit=1030%2C580&ssl=1)
Autonomous rovers could one day deploy sensors while exploring treacherous terrain, such as lava tubes (illustrated), on other worlds. The sensors, enabled with Wi-Fi, would act like bread crumbs that allow any collected data to be passed back to a central rover.
John Fowler/Wikimedia Commons, Mark Tarbell and Wolfgang Fink/University of Arizona