NASA Moon landing: The Apollo 11 experiment still going strong after 50 YEARS | 7/12/2019 | Tom Fish
MireilleMireille (Posted by) Level 3
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NASA’s original rubric reveals the instrument consists of 100 “corner cubes” – or fused silica half-cubes – placed in an 18” square (46cm) aluminium panel.

It is because of these corner cubes’ shape that laser fired at them reflects light directly back.

Measurements - Moon - Distance - Earth - Thanks

Measurements of the Moon’s distance from Earth have incrementally improved thanks ever-refined laser and computing equipment.

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