GRAIL Data Points To Possible Lava Tubes On The Moon @storybywill #moon #lavatubes https://t.co/i7bYtesVR0 http://pic.twitter.com/ODArvW1ZLc
— Universe Today (@universetoday) April 9, 2016
via Twitter https://twitter.com/universetoday
April 10, 2016 at 12:00AM
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