robotic space mission from NASA involving two Mars rovers, Spirit and Opportunity exploring the planet Mars
Artist's conception of MER rovers on Mars MER imaged from different angles
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 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 March 22, 2010, while MER-B Opportunity was active until June 10, 2018.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).