Mars 1

Soviet Space Programme

Agency

Soviet Space Programme

Country

🇷🇺 USSR

Launched

1962-11-01

Flyby date

1963-06-19

Closest approach

~193,000 km (extrapolated)

Key Findings

1.First spacecraft launched with the intention of flying by Mars — pre-dating Mariner 4 by approximately two years
2.Contact lost after 106 days of flight due to an antenna orientation failure that broke the communications link
3.Would have been the first Mars flyby had communications been maintained
4.Demonstrated early Soviet interplanetary probe design and deep-space communication capability

Mission Outcome

Mars 1 was the first spacecraft intentionally launched toward Mars, but contact was lost on March 21, 1963 when the attitude-control system failed and the antenna could no longer be pointed at Earth. The spacecraft is presumed to have passed Mars at approximately 193,000 km on June 19, 1963, but no data was received. It remains a milestone as the world's first attempted Mars flyby mission.