LK (spacecraft)
The LK -Russian: Lunniy Korabl- (Лунный корабль—"lunar ship") was a Soviet lunar lander and counterpart of the American Lunar Module (LM). The LK was to have landed up to two cosmonauts on the Moon. It completed development and was test flown successfully in Earth orbit, but never reached the Moon because development of the N1 rocket, required to take it to the Moon, was unsuccessful.
Read more about LK (spacecraft): Korolev's N1-L3 Plan, Design, Testing, Cancellation, Lunniy Korabl Compared To Lunar Module, Current Location, Popular Culture