This ‘Super Grand Canyon’ on #Pluto's moon, Charon, is much longer & deeper than Earth's. https://t.co/Ff6ee1DTpJ http://pic.twitter.com/8UPKz870YU
— NASA New Horizons (@NASANewHorizons) June 23, 2016
via Twitter https://twitter.com/NASANewHorizons
June 24, 2016 at 02:21AM
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