Your fact-checks will appear here
Soviet moon rover program (1969-1977)
Lunar laser ranging reflectors left on the Moon by Apollo and Lunokhod missions provide the single longest-running, high-precision experiment for measuring Earth–Moon distance, testing gravity, and pr...
Laser retroreflector arrays placed by Apollo, Soviet (Lunokhod) and more recent missions remain the clearest, actively used experiments on the lunar surface: they enable ongoing lunar laser ranging (L...
Lunar laser ranging (LLR) uses laser pulses fired from Earth that return from corner-cube retroreflector arrays left on the Moon by Apollo 11, 14 and 15 (and later robotic missions), enabling round‑tr...