It happened today · 09. August 2021
Mars 7 (Russian: Марс-7), also known as 3MP No.51P was a Soviet spacecraft launched in 1973 to consult Mars. A 3 MP space bus that included the final mission of the Mars program consisted of a lander and a coastal stage with instruments to study Mars as it flew over.
It happened today · 25. July 2021
Mars 5 (Russian: Марс-5), also known as 3MS No.53S was a Soviet spacecraft launched to explore Mars. A 3MS spacecraft launched as part of the Mars programme, it successfully entered orbit around Mars in 1974. However, it failed a few weeks later.