How many failures have there been in the past on the missions to mars?
Here is a list of missions to Mars that failed to meet their intended goals: Mariner 3 (USA), launched Nov 1964, Contact lost due to shroud failure soon after launch Zond 2 (USSR), launched Nov 1964, Contact lost May 2, 1965 Zond 3 (USSR), launched July 1965, Contact lost soon after launch Mariner 8 (USA), launched May 1971, launch failure Mars 2 (USSR), landed on Mars in Eridiana on Nov 27, 1971, but no images ever received Mars 3 (USSR), landed on Mars in Phaethontis, contact lost with lander 20 seconds after arrival Mars 4 (USSR), launched July 1973, flight trajectory missed Mars, failed to reach orbit Mars 5 (USSR), launched July 1973, contact lost after reaching Martian orbit Mars 6 (USSR), landed on Mars in Erythraeum Dec 1973, contact lost during landing sequence Mars 7 (USSR), launched Aug 1973, flight trajectory missed Mars, failed to reach orbit Phobos-1 (USSR), launched July 1988, contact lost en route to Mars Mars Observer (USA), launched Sept 1992, Contact lost en route to
