Either of two crewless roving vehicles sent to the Moon by the USSR in the 1970s. Both of the solar-powered eight-wheeled rovers carried television cameras, soil-testing equipment, a laser reflector, and several other scientific instruments. Lunokhod 1 was taken to the Moon by the Luna 17 spacecraft, landing in the Sea of Showers on 17 November 1970. It travelled 10.5 km before being shut down on 4 October 1971. Lunokhod 2, carried on Luna 21, landed in the Sea of Serenity on 15 January 1973 and travelled 37 km before ceasing to function on 4 June 1973.