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Verona Rupes
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Caption NASA:"Could you survive a jump off the tallest cliff in the Solar System?
Quite possibly. Verona Rupes on Uranus' moon Miranda is estimated to be 20 kilometers deep - ten times the depth of the Earth's Grand Canyon. Given Miranda's low gravity, it would take about 12 minutes for a thrill-seeking adventurer to fall from the top, reaching the bottom at the speed of a racecar -- about 200 Km-per- hour.
Even so, the fall might be survivable given proper airbag protection. The featured image of Verona Rupes was captured by the passing Voyager 2 Robotic Spacecraft in 1986.
How the giant cliff was created remains unknown, but is possibly related to a large impact or tectonic surface motion".
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