Carried to the Moon aboard the Luna 17 spacecraft, Lunokhod 1 became the first wheeled vehicle to operate on an extraterrestrial body, roaming the Sea of Rains for nearly eleven months. Controlled from Earth by a five-man team, it traveled over 10 kilometers, transmitting thousands of images and soil analyses that expanded understanding of the lunar surface years before robotic rovers reached Mars.
On February 15, 1970 the Soviet Luna 17 mission deployed Lunokhod 1 onto the dusty plains of Mare Imbrium, the Sea of Rains, making it the first roving remote-controlled robot to operate on the surface of another world. Roughly the size and shape of a bathtub on eight wheels, it bristled with cameras, antennas, and scientific instruments.
A team of five operators on Earth drove the rover using a delayed video feed, a painstaking process given the several-second lag in radio signals bouncing between the Moon and Soviet ground control near Simferopol. Despite the technical hurdles, Lunokhod 1 covered more than 10 kilometers over 322 Earth days, vastly outliving its planned three-month mission.
It transmitted over 20,000 television pictures and 206 high-resolution panoramas, and conducted soil analysis at more than 500 points, providing crucial groundwork for later robotic and human lunar exploration. The mission demonstrated Soviet mastery of remote robotic control years before NASA's Viking landers reached Mars, and it remains a landmark in the quiet, less-celebrated but deeply consequential Soviet robotic space program that ran parallel to the more famous crewed missions.