Video encyclopedia

Mars Exploration Rover


Opportunity: NASA Rover Completes Mars Mission


Mars Rover NASA Images


NASA at Mars: 20 years of 24/7 exploration


Mars Exploration Rover Update Feb 2009


NASA's Latest Mars Rover Has a Name (recap video)

NASA's Mars Exploration Rover (MER) mission is an ongoing 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: MER-A Spirit and MER-B Opportunity—to explore the Martian surface and geology; both landed on Mars at separate locations in January 2004. Both rovers far outlived their planned missions of 90 Martian solar days: MER-A Spirit was active until 2010, while MER-B Opportunity is still active in 2018, and holds the record for the longest distance driven by any off-Earth wheeled vehicle.
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  • Objectives 

  • History 

  • Spacecraft design 

  • Rover design 

  • Test rovers 

  • SAP software for image viewing 

  • Planetary science findings