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'One sixth of the Earth's gravity. a desert like land with a black sky, and in that sky, not a Moon, but an Earth to gaze at on occasion.' Astronaut, Harrison Schmitt, talks about his experiences on the Moon and considers its possibility for human life. Originally broadcast on 6 December 1972 (Photo Credit: Pilot Harrison H. Schmitt Shares A Moment Of Relaxation With Astronaut Alan Shepard During Prelaunch Suiting Operation. Credit: Nasa/Getty Images)