Zoe is learning cartography. The robot contains a hard disk with a basic map with data from ASTER (Astrobiology Science and Technology for Exploring Planets,) an infrared spectrometer on NASA’s Earth Observing Satellite. It works on about a kilometer of area at a time and takes one astral image/second. So far the bot is working on differentiating clay from basalt, with the researchers hoping that someday a similar device could be sent to a planet like Mars, where we won’t be tripping around for quite some time. Zoe has already mastered avoiding obstacles and fair-field sensing, simple for humans, but not for bots.