Mars 7 is launched from the USSR.

Mars 7

Failed Soviet flyby/lander mission to Mars (1973–1974)

Mars 7, also known as 3MP No.51P was a Soviet spacecraft launched in 1973 to explore Mars. A 3MP bus spacecraft which comprised the final mission of the Mars programme, it consisted of a lander and a coast stage with instruments to study Mars as it flew past. Due to a…