of space stations and on several designs and ground preparatory processes for a Mars mission, which continues to the present day, but has unclear objectives. A Moon base, Zvezda, that was proposed later, developed mockups of expedition vehicles and surface modules, and "Vulkan-LEK" project were not adopted for economic reasons. As some recompense and as a replacement for the crewed landing program, the Soviets fulfilled a program of automated delivery of lunar soil and Lunokhod automated Moon rovers. The launch pad and MIK of N1 were redesigned for the Energia-Buran shuttle program. Five LKs and three LOKs remain, at least, with some kept in the designer's and producer's company museums. Nearly 150 engines produced for first stages of N1F were kept by the manufacturer (Kuznetsov Design Bureau), then sold for use on other launchers beginning around 2000. Gallery See also Apollo program Moon exploration First on the Moon - a 2005 Russian mockumentary Soviet space program References External links The Soviet manned Lunar program Crewed space program of the Soviet Union