Mars 1M No.1, designated Mars 1960A by NASA analysts and dubbed Marsnik 1 by the Western media, was the first spacecraft launched as part of the Soviet Union's Mars programme. A Mars 1M spacecraft, it was intended to conduct a flyby of Mars, however it was lost in a launch failure before it could begin its mission.
During second stage flight, vibrations resonating in the third stage damaged the rocket's attitude control system. As a result of this damage, the rocket went off course during third stage flight and the engines cut out five minutes and nine seconds after liftoff. The spacecraft failed to achieve orbit, with debris falling over Siberia.
Payloads are separated by bullets ( · ), launches by pipes ( | ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets.