Engineers propose using robots to scout out lavatubes for use as human habitats with a method inspired by Hansel and Gretel.
When looking for safe places for astronauts to stay when they venture away from Earth to new moons and planets, one strong contender is that they should stay underground. Being underground means more protection from harmful space radiation and less exposure to weather events, and nature already creates environments that could be ideal bases in the form of lava tubes.
The group proposes using a flock of robots like rovers, landers, or submersibles which are linked by a communication network. To safely explore, the robots would use a method inspired by the fairytale Hansel and Gretel, which involves leaving a trail of small sensors like breadcrumbs. These sensors monitor the environment in which they are placed, and when a robot senses that it is losing communication with the network it drops a communication node. Instead of trying to predict exactly when and where these nodes will be needed, this system lets robots deploy the nodes autonomously as required.
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