In the not-too-distant future, the search for signs of life on Mars and the moon could see the next generation of robots exploring a new frontier: subsurface lava tubes. These missions could also help us determine the best locations for establishing human bases.
To see whether this could be feasible, scientists tested three autonomous robots in a lava cave on the Spanish island of Lanzarote.
Lava tubes are deep underground caves formed by volcanic activity and are found in various parts of the world, as well as on Mars and the moon...
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