NASA's Mars Exploration Rover Mission (MER)

For all Engineers,,,:)
NASA's Mars Exploration Rover Mission (MER) is an ongoing robotic space mission involving two rovers, Spirit and Opportunity, exploring the planet Mars. 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.

Mission scientists announced Friday that the rover, a... nuclear-powered vehicle the size of a small S.U.V., would head to Gale Crater, a 96-mile-wide depression near the Martian equator. What attracted them there is a mountain that rises upward nearly three miles at the center, making it taller, for example, than Mount Rainier outside Seattle.