2M No. 521
1 record
1960s
1 record
1969
2M No. 521 — launch
Category: Launches and Flight TestsType: Orbital launch
Mission: 2M No. 521
Mars 2M No.521, also known as Mars M-69 No.521 and sometimes identified by NASA as Mars 1969A, was a Soviet spacecraft which was lost in a launch failure in 1969.