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“spirit” mars exploration rover – A
(robotic rover on mars)
(active from 2004 – 2010)
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*NASA’s Mars Exploration Rover (MER) mission is an ongoing ‘robotic space mission’ involving 2 ‘mars rovers’ – spirit + opportunity – exploring the planet ‘mars’*
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(it began in 2003 with the sending of the two rovers: MER-A Spirit and MER-B Opportunity—to explore the Martian surface and geology)
(both rovers outlived their planned missions of 90 Martian solar days by far)
(MER-A Spirit was active until 2010)
(MER-B Opportunity was active until ’10 june 2018′)
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