Tags: Artificialsatellite, Satellite.
Spirit MER-A (Mars Exploration Rover – A) is a robotic rover on Mars active from 2004 to 2010. It was one of two rovers of NASA’s ongoing Mars Exploration Rover Mission. It landed successfully on Mars at 04:35 Ground UTC on January 4 2004 three weeks before its twin Opportunity (MER-B) landed on the other side of the planet. Its name was chosen through a NASA-sponsored student essay competition.
