highest mountain in the solar system

Robot Subs in Space

PopSci innovator Bill Stone plans to drop one of the world´s most advanced underwater robots into the deepest hole on Earth. If all goes well, this thing just might help get him to the moon

NASA hopes to someday use a robot like Bill Stone's DepthX to explore Europa, a frozen moon of Jupiter and one of the most probably places in our solar system to support life.

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