Drones in space? ESA tests crash-proof drone in Sicilian caves

When humans first set foot on Mars, they're going to want to be sure that the equipment is up to the task. To be as prepared as possible, the European Space Agency (ESA) has been testing equipment and techniques and training astronauts in cave systems here on Earth. The group's latest toy is a crash-proof drone that can map out tight spots humans can't reach, and these kinds of technologies could, in future, help the first Martian settlers explore lava tubes on the Red Planet.

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