Bill Stone's Excellent Underwater Adventure

Mexican robot paves the way for exploration of Jupiter's watery moon, Europa

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Photo: Randi Silberman
The Deep Phreatic Thermal Explorer, otherwise known as DEPTHX, is an autonomous underwater robot that was designed to explore water-filled sinkholes in Mexico. The machine is the brainchild of Bill Stone, an intrepid explorer/inventor who believes we can use such robotic probes to explore Europa, the watery moon of Jupiter. NASA funded the three-year, US $10 million project.
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