Mars Exploration Rover
Videos
NASA's Mars Exploration Rover mission was a robotic space mission involving two Mars rovers, Spirit and Opportunity, exploring the planet Mars. It began in 2003 with the launch of the two rovers to ex
Artist's conception of MER rovers on Mars
Launch of MER-A Spirit
Launch of MER-B Opportunity
Spirit and Opportunity by the numbers
Spirit (rover)
Videos
Spirit, also known as MER-A or MER-2, is a Mars robotic rover, active from 2004 to 2010. Spirit was operational on Mars for 2208 sols or 3.3 Martian years. It was one of two rovers of NASA's Mars Expl
Mars Exploration Rover
…NASA's Mars Exploration Rover (MER) mission was a robotic space mission involving two Mars rovers, Spirit and Opportunity, exploring the planet Mars. It began in 2003 with the launch of the two rovers to explore the Martian surface and geology; both landed…
The Mars Exploration Rover-2 (MER-2) during testing for mobility and maneuverability
Annotated Columbia Hills panorama from the Spirit landing site
An overall view of MER-A Spirit landing site (denoted with a star)