În orice moment risc Dezarmare laser ranging retroreflector indica Făptură Observare
Laser ranging retro reflector. Apollo 11 mission, first landing on the moon, july 1969, Stock Photo, Picture And Rights Managed Image. Pic. GXC-JMH-A11-100188 | agefotostock
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McDonald Laser Ranging System
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How Do You Solve a Moon Mystery? Fire a Laser at It - The New York Times