Apollo service module, but passed the far side of the Moon at an altitude of above the lunar surface, and 400,171 km (248,655 mi) from Earth, marking the record for the farthest humans traveled from Earth in 1970. The first robotic lunar rover to land on the Moon was the Soviet vessel Lunokhod 1 on November 17, 1970, as part of the Lunokhod program. To date, the last human to stand on the Moon was Eugene Cernan, who as part of the Apollo 17 mission, walked on the Moon in December 1972. Apollo 17 was followed by several uncrewed interplanetary missions operated by NASA. One of the notable interplanetary missions is Voyager 1, the first artificial object to leave the Solar System into interstellar space on August 25, 2012. It is also the most distant artificial object from Earth. The probe passed the heliopause at 121 AU to enter interstellar space. Voyager 1 is currently at a distance of (21.708 billion kilometers; 13.489 billion miles) from Earth as of January 1, 2019. Hazards caused by space technology See also NewSpace Spacecraft propulsion Space science References External links NASA images and videos of space technology NASA solar system overview Space-Tech: To Infinity and Beyond