More details Mars probe intended to enter Martian orbit and comprehensively photograph Mars. Rocket block failed to reignite in Earth Orbit. The orbit decayed and the spacecraft re-entered Earth's atmosphere 2 days later on 12 May 1971. The mission was designated Cosmos 419. More details Mars probe intended to conduct of a series of scientific investigations of the planet Mars and the space around it.
Parameters are for Mars orbit.
Mid-course corrections were made on 17 June and 20 November. Scientific instruments were generally turned on for about 30 minutes near periapsis. Data was sent back for many months. It was announced that Mars 2 and 3 had completed their missions by 22 August 1972. 240 x 406 pixels.