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Re: Horizontal Parallax
From: Norm Goldblatt
Date: 2014 Nov 23, 13:22 -0800

http://en.wikipedia.org/wiki/Lunar_Laser_Ranging_experiment

and it has been done- as early as 1962. Subsequently, a bank of retroreflectors were left by Apollo astronauts. The laser ranging project is ongoing, as I recall.

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