The BEST episodes directed by Shelley Ayres

Landing On A Comet: Rosetta Mission
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#1 - Landing On A Comet: Rosetta Mission

Discovery Channel Documentaries - Season 2014 - Episode 17

Watch live on NASA TV as Rosetta's Philae lander attempts to land on Comet 67P, the first time a man-made object will ever touch down on a comet.