Luna programme became the first probe to achieve a soft landing on another planetary body. It returned five black and white stereoscopic circular panoramas, which were the first close-up shots of the Lunar surface. "Luna 10" (March 1966) became the first artificial satellite of the Moon. "Luna 17" (November 1970) and "Luna 21" (January 1973) carried the Lunokhod vehicles, which roamed around on the Moon's terrain. Another major achievement of the Luna programme, with "Luna 16" (September 1970), "Luna 20" (February 1972) and "Luna 24" (August 1976), was the ability to collect samples of lunar soil and return them to Earth. The
Mars 2 of entry was too steep. The descent sequence did not operate as planned and the parachute did not deploy. The descent module became the first man-made object to impact the surface of Mars. The exact crash site is unknown, but it is estimated to be at . Attempts to contact the probe after the crash were unsuccessful. Mars 2 The Mars 2 was an unmanned space probe of the Mars program, a series of unmanned Mars landers and orbiters launched by the Soviet Union May 19, 1971. The Mars 2 and Mars 3 missions consisted of identical spacecraft, each with