151. This image, created w/ Mars Global Surveyor laser altimeter data in 1998, was the 1st 3D representation of the Martian north pole http://pic.twitter.com/RtNJ2Ers1Z
— Danny Bednar (@SpaceProfessor2) July 17, 2017
via Twitter https://twitter.com/SpaceProfessor2
July 17, 2017 at 06:49PM
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