Mars Rover Opportunity "Oppy" (also known as MER-B or MER-1) was launched from Cape Canaveral Air Force Station, Fl. on July 7 2003. It landed in Meridiani Planum, Mars on Jan 25 2004. It remained operational from 2004 to 2018 (5110 sols) far longer than the 90 sols it was expected to be active.