The rover completed its planned 90- sol mission (slightly less than 92.5 Earth days). The rover got stuck in a "sand trap" in late 2009 at an angle that hampered recharging of its batteries its last communication with Earth was on March 22, 2010. Its name was chosen through a NASA-sponsored student essay competition. Spirit landed successfully within the impact crater Gusev on Mars at 04:35 Ground UTC on January 4, 2004, three weeks before its twin, Opportunity (MER-B), which landed on the other side of the planet. It was one of two rovers of NASA's Mars Exploration Rover Mission managed by the Jet Propulsion Laboratory (JPL). Spirit was operational on Mars for 2208 sols or 3.3 Martian years (2249 days 6 years, 77 days). Spirit, also known as MER-A ( Mars Exploration Rover – A) or MER-2, is a Mars robotic rover, active from 2004 to 2010.
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The launch patch for Spirit, featuring Marvin the Martian Launch to last contact: 6 years, 9 months, 12 daysġ,063 kg: rover 185 kg, lander 348 kg, backshell/parachute 209 kg, heat shield 78 kg, cruise stage 193 kg, propellant 50 kg Total: 2695 days from landing to mission end (2623 sols) Mobile: 1944 Earth days landing to final embedding (1892 sols) Operational: 2269 days from landing to last contact (2208 sols) Planned: 90 Martian solar days (~92 Earth days)
The Mars Exploration Rover-2 (MER-2) during testing for mobility and maneuverability