Lost Rover Found on Moon With Retroreflector Still Intact.

The rediscovery of the reflector could have an important impact in several areas of science that depend on accurately measuring the position and orbit of the Moon. Laser rangefinding currently provides the most precise tests of many aspects of gravity, including the strong equivalence principle, the constancy of Newton’s constant, geodetic precession, gravitomagnetism and the inverse square law.

Technical details at Laser Ranging to the Lost Lunokhod~1 Reflector.