Nasa Missions to Mars By luke99 Feb 24, 1969 MARINER 6 Feb 27, 1969 MARINER 7 May 30, 1971 MARINER 8 Nov 13, 1971 MARINER 9 Sep 25, 1992 MARS OBSERVER Nov 7, 1996 MARS GLOBAL SURVEYOR Dec 4, 1996 MARS PATHFINDER Dec 11, 1998 CLIMATE ORBITER Apr 7, 2001 MARS ODYSSEY Jun 1, 2003 MARS EXPRESS Not real date on the website in said JUNE 2003 Aug 1, 2005 MARS RECONNAISANNCE ORBITER NOT REAL DATE IT SAID ON WEBSITE AUGUST 2005 Sep 23, 2011 MARS SCIENCE LABORATORY Not real date, I only wrote that because it only said fall 2011